Legacy United Energon Universe Core Megatron! This bot gives me serious Buzz Lightyear vibes. Must be the neon green. I love the grey deco with blue accents. The huge wing backpack looks pretty good for how massive it is.

Conversion is simple. Flip the backpack around, crunch up the legs. Flip down the aircraft nose. Cover the arms with the legs. That’s it! Alt-mode is a wicket spacecraft! Reminds me of a Klingon bird of pray!