Hey, Keryo, for Jeremiah, do you want to make ego jokes?

that would work. Also i'd like him to constantly ask "Really?" in times of disbelief.

LOL Sure.
Also, in the original anime, he is believed to be a traitor after episode 4, but I'm considering having him portrayed as trying to STOP a betrayal in the Abridged Series. XD

Here's an example:
Jeremiah: I'll take care of them myself...
Kewel: *sigh* With your ego, sir?
Jeremiah: Really? REALLY? No, with my heavily more appropriate Sutherland mech. OF COURSE WITH MY EGO, YOU DUMBASS!

And:

Jeremiah: Orange Boy, my ego is commanding me to stop you from letting them get away!
Kewel: Shut up and let them get away! Do whatever you can to help them escape!
Jeremiah: Hey, bitch, I am your superior officer! Now STAND DOWN! My ego commands it!