Percy
- Percy is a human in the G.I. Joe vs. the Transformers part of the Generation 1 continuity family.

Percy is a Cobra Viper, the lowest entry-level position within the cobra ranks. He was recruited at a time when Cobra Commander was how-shall-we-say... hard up for personnel, and frankly it shows.
Percy isn't bad at his job per-se, he can fire a gun, and he operates quite effectively within his comfort zone of killing, maiming, and making things 'splode. But outside of his comfort zone (say, transported to an alien planet or time traveling with the fate of the world on his shoulders) and Percy crumbles. He starts to hyperventilate, suffers from panic attacks, and bangs his head against the wall to just make it all go away.
The Baroness claims to find Percy incredibly annoying, but secretly? His complete spinelessness turns her on.
Fiction
G.I. Joe vs. the Transformers Universe
G.I. Joe vs. the Transformers II
Percy was one of two Vipers that accompanied Cobra Commander for his raid on Teletran 3 computer on Cybertron. The other Viper got to fight dinosaurs with the Joes and have an awesome bonding experience.
Percy had a nervous breakdown upon arriving in 1937, and as a result the rest of the team wouldn't let him do anything for the rest of the mission, not even drive the truck. And the Baroness made fun of him the whole time.
The temporary G.I. Joe/Cobra truce (extending 1 hour after their return to Earth) theoreticly allowed Percy time to escape capture, but some of the Cobras appear to have been taken into custody anyway. Percy's final fate is unknown.

