From BZPB Wiki
Thundercracker joined Starscream in his doomed attempt to overthrow Blackout. He emerged from a portal with Ramjet, Skywarp, Dirge, Thrust, Darkwing, and Dreadwind, but they were all immediately forgotten about.
- Dreadwind (revision on 13:13, Dec 03, 2011): "[Dreadwind] and his brother joined Starscream in his failed attempt to overthrow Blackout. He appeared out of a portal along with Thundercracker, Skywarp, Dirge, Thrust, Ramjet and Darkwing and then was completely forgotten."