POTP optimal optimus is a fun toy, but the biggest issue is in gorilla mode while riding the skate board, his back is totally empty! So I decided to fix this and found a perfect jet pack for it, without even need to modify anything. Here is how. 1) Dig out the chug Jhiaxus which is probably collecting dust somewhere. 2) folded it like this, basically Valkyrie guardian mode with sit position. 3) Then just fit it into gorilla's back, perfect, you can feel the "click" sound like a combiner limb fit into socket. 4) That's it, time for all side view Now he has a jetpack while skating, with awesome weapons too! P.S. I really think these two ugly beasts are related somehow.... Updated, with the inspiration from brother Blunderzag, optmal Optimus is formally a mech suit now! Optimal Jhiaxus! Optimal Optimus Prime! Optimal Slash! Finally, my Gundam bust collection can be put into use!