The first attempt to create Nemesis Prime, however, was less than a success without access to Energon.

To finalize the prototype, MECH stole Bumblebee's T-cog and installed it in the robot. Nemesis Prime was the culmination of MECH's Project Chimera, an almost exact copy of Optimus Prime controlled by Silas from MECH's base of operations. In preparation for Nemesis Prime's creation, MECH took a complete scan of Optimus Prime's body and abducted and analyzed Breakdown's body components.