|This article is about a subject in the real world.|
Information in this article is about real life people, companies and things, and does not relate to the in-universe Sonic series.
Garry Chalk is a British-born Canadian actor and voice actor who voiced Grounder and Captain Rescue in Adventures of Sonic the Hedgehog and Dr. Robotnik in Sonic Underground. He is perhaps best known for his work in the Transformers franchise, voicing Optimus Primal in Transformers: Beast Wars and Optimus Prime until 2007.
- Gary Chalk at Wikipedia, the free encyclopedia