Skids is awesome!
Partially because he's actually in the movie (Green Twin)
Names for Red Twin:
Mirage

Swerve

Hot-Shot
My list:
Optimus
Ratchet
Jolt
BB
Swerve (my preffered red twin name)
Skids
Jetfire
Arcee (and clone-copy things)
Wreckage...maybe
Ice Cream Truck (if not twins combined)
Sideswipe
Dinobots (BAY LIES!!)
Superion (SOMEONE has to fight Devastator!)

Decepticons
Ravage
Frenzy (It's Frenzy. what did you expect?)
Rumble
Barricade
Constructicons x5
Devastator (constructicons combined, but still)
Megatron
Whatever the heck Alice really is (Pretender)
Soundwave
Lazerbeak
and a couple more Pretenders
Other
The Fallen
Dispensor (Why? Because it's Dispensor!)
The Evil X-Box 360 from hell
The Evil Steering Wheel from hell
The Evil TOASTER from hell
that adds up to...