Gary Chalk (born February 17, 1952) is a well known Canadian voice actor and actor. He was born in Southampton in England, but moved to Vancouver while young. He has done thousands of voices on various television programs and has also been doing theatre since 1978. He voices [[Grounder]] in Adventures of Sonic the Hedgehog, and also plays some minor roles, such as [[Captain Rescue]]. He is perhaps best known for providing the voices of Optimus Prime in various Transformers shows, and as Ranma's father Genma in the dub of Ranma 1/2, but also had bit parts in Mega Man, Captain N, and ReBoot, to name a few.