The http://transformersgame.com/ site has been relaunched as the Fall of Cybertron site. Now with character information and rotatable 3D models (+ alt modes) of some characters and abilities..
- Optimus Prime [Air Strike]
- Bumblebee [Autobot]
- Megatron [Hover]
- Shockwave [Decepticon]

And hiding in plain sight I found the remaining 8 "unreveiled" character pages..

All big rotating images are missing but the bio and thumbnail images are up..

4 remaining Decepticon spots..
- Starscream [Cloaking]
- Soundwave [Eject Mini-Cons] "..has an armada of mini-cons" :lol
- Vortex [Shockwave Blast]
- Bruticus [Pain Wave]


4 remaining Autobot spots..
- Cliffjumper [Cloaking]
- Jazz [Grapple]
- Perceptor [Autobot] "..a sharp shooter" his thumbnail is a tank alt mode.
- Grimlock [Rage Dino Mode] "..leader of the Lightning Strike Coalition force." "..has doubts about Optimus's leadership." SPOILER -> (I guess this is at the start of the game and why he wanders off).