Transformers: Prime - Season One : Frank Welker, Peter

Talking with Megatron (Frank Welker) - Channel Guide Magazine

Transformers Prime Darkness Rising: Part 1 (TV Episode 2010) - IMDb

Peter Cullen And Frank Welker Comments On The Future Of Transformers Live Action Movie Franchise - Transformers News - TFW2005

Frank Welker and Peter Cullen in Video to Launch Reveal Your Shield Week - Transformers

TRANSFORMERS Panel with Peter Cullen and Frank Welker - Fan Expo 2019 [Audio]

Peter Cullen and Frank Welker on voicing Optimus Prime and Megatron, the Transformers legacy and other iconic roles

Transformers 4 - Peter Cullen and Frank Welker Comment on New Optimus Prime and Movie Characters

Transformers Prime Darkness Rising: Part 1 (TV Episode 2010) - IMDb

Peter Cullen, Canada's famed Optimus Prime voice actor, still prioritizes helping kids

Peter Cullen's long road as Optimus Prime continues with 'Transformers: Titans Return' - Los Angeles Times

TV Interview: Transformers Prime: Beast Hunters - Frank Welker (MEGATRON) - ComicsOnline