For more deep dives into the series, you can check out the full synopsis on the Transformers Wiki or view cast details on IMDb . "Transformers Prime" Speed Metal (TV Episode 2011) - IMDb
Peter Cullen (Optimus), Frank Welker (Megatron), Steve Blum (Starscream), Daran Norris (Knock Out) First episode where Ratchet does not appear. [S1E11] Speed Metal
: This was the final episode where G1 veteran Susan Blu served as the voice director for the series. Detailed Episode Information Air Date April 9, 2011 Primary Antagonist Voice Cast For more deep dives into the series, you
: Knock Out is established as a "transformer with a finish," showing more concern for a scratch on his paint than the loss of a door during combat. Production Credits & Trivia Director : David Hartman and Vinton Heuck. Writer : Dean Stefan. Detailed Episode Information Air Date April 9, 2011