Peter Cullen explains how he created the voice for Optimus Prime - YouTube
When Optimus Prime Died, Voice Actor Peter Cullen "Hated It" - YouTube
Optimus Prime, Megatron remember 35 years of Transformers
Peter Cullen Explains Where He Got the Voice for Optimus Prime
Peter Cullen - Wikipedia
Peter cullen transformers hi-res stock photography and images - Alamy
Ron Perlman joins Transformers: Rise of the Beasts as voice of Optimus Primal, Entertainment News - AsiaOne
Epic Sound – Interview with the voice of Optimus Prime
463 Peter Cullen Bilder und Fotos - Getty Images
Canadian voice actor Peter Cullen participates in a handprint ceremony beside Optimus Prime from the $1 billion worldwide blockbuster film Transformers: Age of Extinction", outside the TCL Chinese Theater in the Hollywood