according to Superman_Alpha here http://www.tfw2005.com/boards/showthread.php?t=139260 From the AllSpark: TF Animated cast list Bumblebee - Bumper Robinson (apparently in a Chris Rock-esque performance) Bulkhead - Bill Fagerbakke (Patrick from Spongebob) Prowl - Jeff Bennett Ultra Magnus - also Jeff Bennett Arcee - Susan Blu (also the voice director, she was also Arcee in G1) Blackarachnia - Cree Summer Jazz - Phil Lamarr (for those of you who were asking) Corey Burton - Shockwave (he was G1 Shockwave too) Tom Kenny - A Constructicon (Tom Kenny is Spongebob, among many other roles) A garbage truck (Junkion?) - "Weird Al" Yankovic Lugnut (David Kaye) Starscream (Tom Kenney) Ratchet (Corey Burton) Prime (David Kaye) From Seibertron: Grimlock will be voiced by David Kaye who did a SNL Phil Hartman Frankenstien-y voice as an example. He's also doing a new guy named Lugnut. Corey Burton, besides doing Megatron & Shockwave is doing Ratchet too. Blurr will be reprised by John Moshita, from G1. They already wrapped up two seasons, 29 total episodes, with the 90 minute special (basically a 3 episode pilot movie like the original G1 pilot). It's traditional voice over work, where they are all together for the recording, not like anime dubs where each actor only has their lines to record. I know the press release sounds kiddy, but with this many G1 voice actors and characters, if the plot is semi decent I might enjoy this series. *UPDATE* Kaye said that most of the characters outside the core cast (Prime, Bulkhead, Bee, Prowl, Ratchet) will be single-episode cameo appearances. He also strongly hinted that Waspinator might make an appearance, though if he does, unfortunately Scott McNeil will not be available to return.