13 December 2022

LEGO® Monkie Kid™ review: 80045 Monkey King Ultra Mech

Posted by Thomas Jenkins

Today we’re looking at 80045 Monkey King Ultra Mech: the largest of the upcoming January wave of LEGO® Monkie Kid™ sets. Soon, Caz Mockett will be investigating the other four sets: 80040 Monkie Kid Combi Mech, 80041 Mei’s Dragon Jet, 80043 Yellow Tusk Elephant, and 80044 Monkie Kid’s Team Hideout. What better way to celebrate the approaching new year than with some brand-new LEGO sets and elements?

Products in this article were provided by LEGO®; the author's opinions are their own.
LEGO® Monkie Kid 80045 Monkey King Ultra Mech
US$159.99/ £119.99/ 139.99€/ AU$229.99
1 January 2023
1705 parts
Buying from LEGO.com? Please consider using our affiliate links, we may get a commission: USA LEGO Shop | Australia LEGO Shop | UK LEGO Shop.

New elements

  • 4 x Big Sword with Axle (6408777) 

This blade element is new for the Monkie Kid 2023 wave and will also appear in 80040 Monkie Kid’s Combi Mech. It is 16 modules long, with a single axle connection at one end. It reminds me of the specialized blade-propellor elements introduced in the LEGO® NINJAGO® line but here, with the cloud motif at the hilt, it is distinctly Monkie Kid.

  •  1 x Monkie Kid Weapons pack (6410229) 

The LEGO armoury has been further expanded with this new selection of elements. These 8 Pearl Gold pieces came packaged together as a "family mould" in their own plastic bag, though this particular set only makes use of the staff ends (far right in the image above) and the long curved blade (far left).

We’ll have to wait and see how the designers ultized the remaining elements which also appear in 2 other sets from this wave: 40043 Yellow Tusk Elephant and 80044 Monkie Kid’s Team Hideout. I’m most intrigued by how the crown/comb looking element will be integrated. 

I can see the potential in these parts as decorative elements for MOC building. My favourite are the staff ends, but that handle-like element has already inspired me to whip up the following tablescraps.

Ideas for LEGO keys by Thomas Jenkins using the new Monkie Kid Weapons pack (element 6410229)

 New Minifigure Elements 

  • New neckwear element (wings) in Pearl Gold (6369006), also in 80044 Monkie Kid’s Team Hideout
  • New hair/headwear element in White (6420281) exclusive to this set
  • New Hair element in Bright Light Orange (6414818) exclusive to this set
  • New neckwear element (beak) in Bright Light Orange (6428437), also in 80044 Monkie Kid’s Team Hideout
  • New Neckwear element (elephant trunk and tusks) (6420208), also in 80043 Yellow Tusk Elephant

Recoloured elements

  • 1 x Wedge Sloped 45° 6 x 8 with Pointed Cutout in Pearl Gold (6202741 | 22390)
  • 8 x Wedge Sloped 4 x 4 Pointed in pearl Gold (6357781 | 22391)
  • 1 x Windscreen 8 x 4 x 2 Curved with Handle in Trans Red (6426592 | 23448)
  • 1 x Weapon Hilt Symmetric in Red (6422224 | 66909) will also appear in 80044 Monkie Kid’s Team Hideout
  • 2 x Plate Angled 2 x 2 with Step and Hole in Center in Red (6375427 | 79846)
  • 4 x Plate 1 x 5 in Dark Bluish Grey (6413109 | 78329)
  • 1 x Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) in Yellow (6424448 | 65509)
  • 1 x Minifig Neckwear Armor Shoulder Pads in Light Bluish Grey (6426615 | 41637) Also in 80044
  • 1 x Wave / Flame Small with Pin in Black (6426595 | 37775)

Rare Elements

The trademark Monkie Kid colour scheme of turqoise, red and gold is created with a host of rare elements:

Rare elements in Dark Turquoise:
  • 8 x Brick Round Corner, Curved 3 x 3 x 1 Quarter Circle (6399565 | 76797) in 1 other set 
  • 27 x Slope Curved 2 x 2 with Stud Notches (6344861 | 66956) in 2 other sets 
  • 2 x Slope Curved 2 x 1 with Stud Notch Left (6391018 | 29120) in 3 other sets
  • 2 x Slope Curved 2 x 1 with Stud Notch Right (6291017 |29119) in 3 other sets
  • 20 x Bracket 1 x 2 - 1 x 2 Inverted (6373576 | 99780) in 1 other set 
  • 2 x Tile 1 x 3 (6213787 | 63864) in 4 other sets
  • 4 x Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] (6391344 | 99563) in 1 other set 

Rare elements in Red:
  • 1 x Wedge Plate 2 x 4 27° Right (6286513 | 65426) in 5 other sets 
  • 1 x Wedge Plate 2 x 4 27° Left (6286516 | 65429) in 5 other sets 
  • 4 x Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate (6385920 | 73109) in 4 other sets 
  • 34 x Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] (6394880 | 99563) in 4 other sets 
  • 4 x Flag 2 x 2 Trapezoid with Flared Area between Clips (6365503 | 80324) in 4 other sets 
  • 4 x Brick Curved, 3 x 1 with 1/3 Inverted Cutout (6365716 | 70681) in 2 other sets 

Rare elements in Metallic Gold
  • 1 x Wedge Curved 1 x 2 x 2/3 No Studs, Wing End (6376475 | 47458) in 2 other sets 
  • 6 x Slope 18° 2 x 1 x 2/3 with 4 Slots (6294514 | 61409) in 5 other sets 
  • 9 x Slope Curved 2 x 1 with Stud Notch Left (6386791 | 29120) in 2 other sets 
  • 9 x Slope Curved 2 x 1 with Stud Notch Right (6386790 | 29119) in 2 other sets 
  • 4 x Tile 2 x 2 Curved, Macaroni (6294524 | 27925) in 5 other sets 
  • 2 x Slope 45° 2 x 1 with 2/3 Inverted Cutout and no stud (6404402 | 28192) in 1 other set

Rare elements in Pearl Gold:
  • 3 x Wedge Sloped 4 x 2 Triple Right (6394216 | 43711) in 2 sets 
  • 3 x Wedge Sloped 4 x 2 Triple Left (6394215 | 43710) in 2 sets 
  • 2 x Brick Special 1 x 2 Rounded with Center Bars (6370621 | 77808) in 3 sets 
  • 4 x Brick Special 2 x 5 with Slope, Studs on Side (6371694 | 79897) in 5 sets 
  • 2 x Wedge Curved 2 x 3 x 2/3 Two Studs, Wing End (6357918 | 47456) in 4 sets

And a random assortment of rare elements in other colours:
  • 8 x Rubber Technic Tread Attachment in Orange (6185551 | 24375) 
  • 2 x Plant, Pumpkin in Dark Tan (6357809 |51270) 
  • 2 x Rotation Joint Socket with 2 Pins in Dark Bluish Grey (6369944 | 80563) 
  • 1 x Hair Mohawk with Ponytail in dark Bluish Grey (75512 | 6338388) in 80043 and 4 other sets 
  • 1 x Minifig Neckwear Shoulder Guards in Purple (37614 | 6392222) in 80043 and 1 other set 
  • 4 x Technic Axle Connector 2 x 3 with Ball Socket, Closed Sides in Black (6338289 | 67695) 
  • 2 x Hinge Plate 1 x 4 Swivel Top / Base - Hollow Clip [Complete Assembly] in Yellow (6416522 | 1927)


  • 1 x Tile Round 3 x 3 in Red (6420289) 
  • 2 x Tile Round 1 x 1 in Trans Yellow (642090)
Both are exclusive to this set and won’t appear in other January release Monkie Kid sets. At first glance, I assumed the 1x1 printed eye that featured in previous Monkie Kid sets but it is subtly different in the printing on the eyelid. 

There is a sizeable sticker sheet boasting 34 stickers in 18 unique designs. Most of the stickers are used to add superfluous details to the mech, so the aesthetics aren't affected much if they aren’t applied. Though I feel there are some that are a little more necessary such as the nose design (sticker number 8) which adds a bit more character to the face.

The foil sheet is another exclusive element to set 80045. The Chinese character on the large elements means sky or heaven - suitable for these elements that will be used on the wing-like structure protruding from the mech’s back. I’d like to get my hands on a few more of these sheets to procure some more of those long prints in the centre of the sheet as I think they'd make amazing plumage for a mecha-peacock.  

Minifigures in set 80045 Monkey King Ultra Mech

The set is replete with a host of 6 minifigures, all of which include numerous new elements and/or new decorations. We've already looked at the new elements above, so here they are in situ, along with the new decorated parts.

Azure Lion 

  • New decorated head in Dark Turquoise (6420286) 
  • New cloth element in Purple (6421058) 
  • New decorated torso in Dark Turquoise (6429288)  
  • New decorated legs in Pearl Gold (6420288)
Azure Lion is an exclusive figure for this set.

The Golden-Winged Eagle 

  • New decorated head in Light Aqua (6417770)
  • New decorated torso in Light Aqua (6428990) 
  • New decorated legs in Black (6417772) 
These decorated elements will also be available in 80044 Monkie Kid's Team Hideout, in which the Golden-Winged Eagle also makes an appearance.

Yellow Tusk Elephant 

  • New decorated head in White (6417494)  
  • New decorated torso in White (6426648) 
  • New decorated legs in Dark Turquoise (6417496) 
Yellow Tusk Elephant will also appear in 80043 Yellow Tusk Elephant, and his decorated parts will be available there too.

Monkie Kid Power-up 

  • New decorated torso in Pearl Silver (6328468) 
  • New printed legs in White (6417498) 
These decorated elements for Monkie Kid Power-up are exclusive to this set.

Monkie King 

  • New printed head in Tan (6420291) 
  • New printed torso in Bright Light Orange (6430010) 
  • New printed legs in Bright Light Orange (6417776) 
The above prints for Monkie King are exclusive to this set. The legs feature some lovely crisp printing on either side.

Mr. Tang 

  • New printed head in Yellow (6420283) exclusive to this set 
  • New printed torso in Dark red (6428827) exclusive to this set 
  • New Printed legs in Tan (6420285) exclusive to this set 
Mr Tang is another figure exclusive to this set. Like Monkie King, his legs feature printing on the sides.

Constructing the side build: Monkie King’s Jet 

With the plentiful batch of new and rare parts out of the way, let's build!

We start with the jet. The design has a modular approach with various sub-assemblies attached via clips and LEGO Technic axles. 

The Jet is responsible for one of the set’s main play features, so is required to be particularly sturdy. As such, I came across an interesting technique to anchor this brown Technic axle into the structure of the vehicle. The hollow of the boat stud conceals the stopper of the Technic axle. It’s simple but effective.

Building the Ultra Mech

The construction of the Mech itself begins with the torso. There are plenty of SNOT elements - particularly brackets - at work here, used to both strengthen the structure and attach the decorative elements. 

On the back is an interesting bracket-clip combination of parts that help keep the shoulder area together and provide the attachment point for the opening cockpit. 

With the torso mostly complete, we work our way down from the hips, which attach to the body using some ratcheted liftarms. It’s an approach that is often seen in these large mech models. There are plenty more brackets to be found here. You might notice that the yellow bricks usually found in the Monkie Kid colour scheme have been relegated to the internal structure, to be replaced by gold bricks for the aesthetics.

As with many of these large mech kits, the knees are locked in a slightly bent position to keep the model standing. It’s a shame there is no articulation here, but that’s expected in a model of this size and heft.

I really like the way the boots come together. The design evokes traditional hanfu-like slippers thanks to their pointed toes. I was also impressed with the way the designer managed to limit the movement in the foot to keep the model standing. 

On the soles of the feet are the orange Technic rubber stoppers. It’s a simple and space-efficient solution to keep the mech from slipping around on the shelf.

The build continues with the arms which are almost fully articulated. The construction is similar to the legs: a core of brackets around which the decorative elements are added. In this case, in the form of turquoise bands on top of the red base colour. There are only a handful of studs and anti-studs dotted around the model. 

The hands are solid and powerful with three movable digits each which are attached on clips and bars. The palm of each hand conceals an attachment point for the staff which will be constructed later. 

Before we attach the head, there are armour sub-units which conceal some of the joints and add a bit more bulk to the model around the chest and shoulders. We also add structures onto the back of the model to make use of those lovely foil elements.

There is some great shaping to admire on the head but its construction is not as complicated as it first appears. Like the rest of the body, we start with a core of bracket elements. Clips and bars help round out the shape of the head. The Monkie Kid theme has made some good mileage from that modified wedge, as like previous monkey-inspired mechs in the line (see 80012 Monkie Kid Warrior Mech or 80033 Evil Macaque’s Mech for examples). It’s used again here, and I’m not complaining as it’s the perfect part to create the mech’s primate features.

The model is complete after he receives his staff. A long axle is concealed within to keep all those 2x2 round bricks together. 

Play Features and Functions 

 The jet can be quickly and easily disassembled. 

Its constituent parts can then be added to the mech. It’s simple and works well. The attachment points are well concealed so the mech looks great in both configurations. 

The transformation process reminded me of the Power Rangers combination toys that were popular when I was a child so I did feel a tinge of nostalgia when switching back and forth between the two versions. 

The light brick in the head works well enough too. I think most of the light shines through the gaps around the eyes rather than through the eyes themselves, however. 

Finally (and crucially), both the jet and mech can seat a minifigure. 


The resulting model is an imposing and powerful mech. The fixed legs mean that dynamic poses like running, or kicking aren’t possible, but that’s pretty par for the course with a mech model of this size. Even so, the model’s proportions along with that colour scheme (I don’t think I’ll ever get tired of the red, turquoise, and gold combo) and the articulated arms, head, and tail mean it can still cut a striking pose. 

 The extensive use of brackets means that each surface can be made super smooth with studless elements; indeed, only a handful of studs and anti-studs can be found across the whole model. With such refined aesthetics it looks like it could go toe-to-toe with some of the 18+ sets... perhaps it could become a formidable opponent for the recent Iron Man Hulkbuster model? Plus, with all those brackets keeping the model together, not only does it look good on a shelf as a centerpiece to a Monkie Kid collection, it’ll take a beating, too. 

I didn’t build the previous iteration, 80012 Monkie Kid Warrior Mech, but I did read Jonas Kramm’s review of it for the sake of a comparison. 

One of the draws of that set was the high quantity of Metallic Gold elements. 80045 favours Pearl Gold over the shinier lacquered ones, but it seems that the designers addressed a few of the issues Jonas had with that set such as the feeble looking hands, noticeable gaps and exposed grey elements peeking through in some places. So, this will certainly appeal to Monkie Kid fans looking for an upgrade.

LEGO® Monkie Kid 80045 Monkey King Ultra Mech will be released on 1 January 2023, priced at US$159.99/ £119.99/ 139.99€/ AU$229.99. If you are preordering or buying it from LEGO.com, please consider using our affiliate links, we may get a commission: USA LEGO Shop | Australia LEGO Shop | UK LEGO Shop.

Editor: Chris Baginski

READ MORE: Zach Hill review LEGO® ICONS™ 10304 Chevrolet Camaro Z28

Help New Elementary keep publishing articles like this. Become a Patron!

Huge respect goes to all our patrons, especially our 'Vibrant Coral' tier: Antonio Serra, Beyond the Brick, Huw Millington, Big B Bricks, Dave Schefcik, David and Breda Fennell, Richard Selby, Gerald Lasser, Sue Ann Barber & Trevor Clark, Baixo LMmodels, Markus Rollbühler, Elspeth De Montes, Megan Lum, Andy Price, Chuck Hagenbuch, Jf, Daniel Church, Amy Hays, Wayne R. Tyler, Timo Luehnen, and now Lukas Kurth of StoneWars has raised his pledge to Vibrant Coral! Thank you all so much for supporting us.

LEGO® Shop at Home
USA: FREE SHIPPING every day on orders over $35!
UK: Free delivery when you spend £50 or more at LEGO!
Australia: Discover the latest promotions and offers on LEGO.com

All text and images are © New Elementary unless otherwise attributed.


  1. You've created Lego Keyblades! Now were just need figs of Sora, Donald, and Goofy from the Kingdom Hearts videogames!

    1. Oh haha! not intentionally but if anyone wants to try, I think we've seen Donald and Goofy minifigs in the past :)

  2. Great review of an awesome set!

    One minor correction—while Monkie Kid's torso is indeed exclusive to this set, I think his legs are also used for Mei's similar armor in the Yellow Tusk Elephant set. I'm looking forward to seeing those two figs side by side! The legs and head for Monkey King also look like they appear in an upcoming polybag set (though that set seems to use an older torso).

    I've been impressed with this set since it was first revealed. The shaping is so much more refined than the 2020 Monkey King Warrior Mech, and while it uses a mix of pearl and lacquered gold (moreso than that earlier set), it does seem to organize it in a very coherent way. The combining feature with the jet is very exciting to me—I did something similar with the earlier set, modifying the back so that I could mount the massive Cloud Jet as a jetpack, but that was of course not an intended combination and the original mech struggled to support all that weight.

    I hadn't realized that the new weapon pieces (which represent the traditional armaments of the original Journey to the West characters) would come as a pre-pack, which should make collecting them easier if you can provide some of the additional hilts and staff ends in a set like this that lacks them. The new minifigure parts are also interesting, including the "jaw" accessories for the golden-winged eagle and yellow-tusk elephant. Between these, the new Ninjago baddies, and the upcoming CMF Orc, it seems like Lego is really experimenting with neck accessories that modify the shape of the minifigure head.

    1. Thanks for your comments! I was super impressed with how refined the finished model looks- hardly any gaps and really smooth. Quite surprising for this 10+ set as the aesthetics are on par with some of the Icons or 18+ sets.
      You are right about Monkie Kid's legs they also appear in 80043 Yellow Tusk Elephant. Good Eye! Caz Mockett will post her review of that set soon.
      I was also quite surprised with how decked out the minfigures were with their varius accessories. I wonder what the limit is for the amount of neckwear one model can wear! And I like the approach of modifying standard heads with neckwear rather than new head moulds for an extra level of customization for us to make our own custom figures.

    2. Very late to this reply, but regarding the "limit" for the amount of neckwear a minifigure can wear, I would assume that part of that would depend on how much of it was worn around the neck stud (like the cape, shoulder pad, and wing pieces in this set), versus how much of it was fitted to the head (like these new animal head accessories). Only the former actually increases the overall distance between the head and shoulders, meaning that having one of each doesn't meaningfully impact the connectivity or proportions more than merely having a single cape or armor piece would.

  3. Thank you for the review!
    Is the MK’s torso cracked on the side? I think I can see it on the group photo.

    1. Looks to me like just marbling—sometimes on "pearl" metallic parts, the blending of the metallic additive can be a little inconsistent and lead to streaks of darker color.

    2. Sorry, I meant the Monkie Kid’s minifig’s gray torso. It looks like it has a big crack under the left arm.

    3. Yeah, I think that's Silver Metallic/Flat Silver with a bit of marbling.

    4. Definitely not cracked! Andrew is correct, it's just a bit of marbling in the Flat Silver plastic.

  4. That Golden-Winged Eagle looks somewhat as if it's been inspired by the Tengu, a rather popular and frequent bird-like supernatural being in Japanese folklore...

    1. Like his two companions, he is based on a specific character from Journey to the West

    2. For more information: https://en.wikipedia.org/wiki/Dapeng_Jinchi_Mingwang

      Much more explicitly bird-like than the Japanese Tengu.

    3. I should have guessed. There's a theory that both Peng and Tengu might be derived from the Hindu deity Garuda, apparently. Although it seems Garuda is generally considered powerful, but much more benevolent than both Peng and Tengu.

  5. The gold staff end pieces immediately reminded me of Cordak ammo. New blade piece looks neat too.

    1. Oh, and are those rubber pads pushed halfway into a full pin hole? I wasn't aware that was considered a legal connection, though it makes sense for a rubber part.

  6. The golden wings have actually appeared in one previous set, K-Pawp Concert. It's certainly a rare part in a new colour though.

    1. I can foresee some DC Comics fans upgrading their Hawkman and Hawkgirl figs with these!

    2. Oh a Vidiyo set! How could I have missed that? :D

  7. I've got mixed feelings on this set. On other hand, there are some great shaping on the bulky legs, the patterns are good, the head is neatly designed... but the monkey shape with long arms, short wide torso and massive upper legs doesn't quite add up. I think the problem is the neck that lacks muscles, the head looks too alone and too high up. They could have went more to gorilla/orangutan route by making the head bulkier and more on the front, but now the bionicle physics look silly and unsatisfactory. The jet cannons make it look slightly better, but it's still a bit weak. Neck muscles are important!

    The review is nice though. The gold bits on the weapon family pack are most excellent. Laid-back part design, in a good way.

    1. Interesting perspective... the neck on this one is actually slightly more robust than the earlier Monkey King mech (which used a skinny click hinge). You might be able to fit some angled pistons to evoke neck muscles a la Bionicle, but I don't personally agree that it needs them. This is, after all, an (armored) monkey, rather than a bulkier sort of primate.

    2. It would be nice to see some different mech designs inspired by different types of ape or monkey. For me it was that diminutive tail that could do with a bit of improvement!