I first started working on my “Transformable Power Up Optimus Prime” almost a year ago.
It was only recently I did a full repaint including adding battle damage to reflect a movie-accurate version of Power Up Prime in the movie Revenge of the Fallen.
I also redid a lot of the joint attachments with Ning’s help so we might finally see this figure on her display shelf in future! It’s all yours b.
Even after almost a year, I have yet to see a custom Power Up Prime that is highly movie accurate AND can “disassemble” so that Optimus Prime can reverted back to his original form and can still transform into truck mode.
What makes my “Power Up Prime” unique is that it is probably the most movie/ concept art accurate “Power Up Prime” that has detachable Jet Fire armour so that Optimus Prime can transform into truck mode.
Plus, the way the attachments are designed are so that different parts of the armour moves with body parts to maintain high articulation in “Power Up” mode. I solved one of the more difficult parts in designing the interchangeable feet.
All my attachments are through magnets hidden/ embedded in Prime as well the individual armoured parts.
The original toys from Hasbro allow a Leader Class Prime to combine with a Leader Class Jetfire but it is not really movie accurate.
My Power Up Prime stands at 18″ tall at its highest point. It is the most complex and elaborate custom till date as it involved “kit bashing” (building from scratch) many parts and custom making them from multiple toys.
Here are pics of Optimus Prime pre-Power Up.

This is the Power Up Prime with all of the Jetfire Armour parts fused to him.

With two weapons added. A concept art-accurate Jetfire combined gun with ammo belt in the right hand and a gatlin gun attached to the forearm on the left hand.
The Jetfire combined gun has a blue LED light mounted inside that can be switched on.


Watch video here:
Here is the detailed breakdown of the custom scratch work:
All of Jet Fire Armour parts were built from scratch with Jet Fire and Gundam parts including a whole lot of “kit-bashing”. From head down:
Jetpack
- The thrusters are completely custom made from a bunch of different parts.
- The main extensions are secured to a base that has large magnets attached to the underside. The magnets attach through to the batteries inside Prime.
- There are four arms that extend to the outer half shell of each thruster unit.
Shoulder Pads
- Custom-made shoulder pads attach to magnets embedded under Prime’s shoulder pads. The magnet positions allow the shoulder pads to move as the figure articulates
Shoulder Guards
- Custom-made shoulder guards attach to the steel pin on Prime’s shoulder with cylinder magnets. This allows the shoulder guards to swivel out of the way when arms are articulated
Back Wings
- The entire wing assembly detaches as one unit and both wings can swivel to different angles.
Chest Plate
- Chest plate with rib armour was made from different parts and fabricated as one assembled unit. They attach to cylinder magnets embedded into the sides of Prime’s body
- The chest plate also pushes up Prime’s chest window armour to give him a more buffed look in “Power Up” mode
Front Thigh Guards
Inner Thigh Guards
- Sculpted to fit around thighs from Gundum parts
Knee Guards
- Custom made from different sculpted parts attached via magnets
Shin Guards
Leg Wheel Guards
- Cut from Gundum and Jet Fire parts and each attach via two magnets to keep it in place without rotating with the wheel
Feet
- This is my only ‘cheat’ in the custom. In designing the extended feet/ leg and creating a movie/ concept art accurate look as well as maintaining stability of the “Power Up” figure, I figured the best way to to just switch feet for the “Power Up” mode. The “Power Up “feet are custom made from many different parts including the feet from a ROTF Leader Class Prime
Forearm Guards
- Cut from Jet Fire parts
Weapons
- Custom BFG with blue LED with ammo belt
- Custom Double Gatlin Gun mounted on forearm with ammo belt
See the pre-battle damage and painted Power Up Prime HERE
To learn how I create custom battle damage and paintwork, read my two tutorials:
Part 1: How to Apply “Battle Damage” to Figures, Toys, Collectibles and Models
With this custom in the books, I just realized how many Primes I have. This is about 10% of the collection with the rest still mint in sealed boxes!
15 Mar 2012 Update: You can now bid on the custom Dual Model Kit Optimus Prime on Ebay HERE.



















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Did you use a voyager or leader prime for this custom power up prime?
This is a Leader Class. Thanks!
Voyager Class will take a lot of work, not sure if I want to tackle it.
i have try to custom voyger optimus prime, it wasn’t that bad
from what other toy did you use for this custom, including jetfire?
All the parts I used are mentioned in the blog under the specifications. Most where cut from parts and hand sculpted, filed and sanded. It was a kit bash and there are no real parts you can easily “cut and paste”.
The ball joints are fairly stiff and as long as it is positioned correctly, Prime can stand. But if it shifts, it will topple. If your ball joints are not tight enough, use epoxy putty to create a thin layer. That is apply a bit of putty in the bowl of the foot joint. Put the ball joint in to form the shape of the putty. Remove excess and let it harden. Put really just a small pinch and add if you need. Too much, you will have to grind or sand it out.
great. thanks.
also how can prime stand without it falling due to his ball jointed foot?
how did you manage to make him stand without falling due to his ball jointed foot?
specifically what kind of magnet did you use?
Hi, neodymium magnets. You can get them from places like: http://www.supermagnetman.net/ Square or rectangle magnets for pieces that should not move. Cylinder/ round magnets for parts that you want to swivel.
what was the scale of the gundam model you used for this custom?
Master Grade – There is one more bigger which is even more ideal I think but way too expensive.
did you use a double-sided tape to attach the magenets to prime and jet fires parts?
No. If you use the neo magnets, you will need to use a 2-part epoxy. Even so, if the magnets are very powerful and you accidentally put them near each other, they will rip out. Then you have to epoxy back and paint again. It happened to me at least a dozen times :-S especially after completing it and posing the figure. Good luck!!!
Here’s a tip, now that the Dark of the Moon Figures are out, some shops may sell the older series at a cheaper price. The Starscream Leader Class (Hunt for the Decepticons) looks like it has good parts to support a power up prime since it is also a jet.
what were the size of the magnets that you used for this custom
Hmmm… too many sizes. You need to figure out where you want the magnets then measure the space where the magnets are to fit. Then look for magnets closest to that size. It does depend on luck to match what is in stock.
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good job on the custom, i really appreciate your work, i think you should custom rotf leader class megatron.
where did you get your chain gun shells?
Hi Ryan, the chain link is actually model tank track, cut to shape, and painted!