first off, this is what i think of for a xerxes to offset a pe-05 leonidas. megatron vs optimus prime..IMHO!! this RID megatron is perfect for the job.. i used a generations tank megatron head and neck, classics bumblebee ball joint, masterpiece mp18 hands, thundercats keychain metal swords. pe shadow bat, zoid connectors for joints and a cw megatron canon to make this project. lio convoy has been extended to balance out his legs, but i extended my RID megatron years ago to scale with RID optimus...simple, yet effective!
Perhaps as the cancelled (Botcon? TFCC?) red "transmetal 2 BW Megatron"?, or as a black "Transmetal G1 Megatron" (in a Japanese comic, G1 Megs turns "Transmetal black" after his exposure to BW Mgatron's spark/quantum surge in the Bast Wars, millions of years ago)?