You mean in Animated? the same episode he comes in on, "Sound & Fury"
soundwave,
The new decepticons are as follows: Crankcase Laserbeak Soundwave (car form) Protoforms
if you are talking about the new 1s then its the fallen,soundwave,ravage,and devastator
for autobots, i think everyone from transformers 2 except Jetfire and for decepticons, i think megatron, starscream,some decepticon minions,and soundwave.
Fallen, Megatron, Starscream, Soundwave, Ravage, Devastator are the more prominent ones.
Same Witwicky characters, simmons, soilders. New ones are, Carly Witwicky, and Deceptcon allies to Soundwave.
transformers autobots optimus prime,bumblebee,ironhide,ratchet,rc twins,Mudflap and Skids,dale jr,hot rod,sideswipe,dinobots transformers decepticons megatron,starscream,shockwave,soundwave,devastator,
Transformers prime characters arcee optimus bumbleebee ratchet and cliffjumper whaeljCK AND BULKHEAD
It's called "Critical"
Megatron, Soundwave, Shockwave, some unknown armored fuel truck character, another new character, possibly (not sure)Bruticus or Menasor, maybe even(still not sure) Unicron.
i don't know a 4th season become the new magsus
Linkin Park has become a regular on Transformers movie soundtracks, providing a song for each of the three movies. These songs are:What I've Done in 2007 Transformers film.New Divide in Revenge of the fallen.Iridescent in Dark of the moon.