From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Peter Kelamis (born in 1967) is an Australian actor, voice actor, and comedian.
He was the second English voice for Goku in the Ocean Group dub of Dragon Ball Z. He voiced the character in Episode 50-67 (38-53 in the edited episode numbering) and in the VHS/DVD releases of the first three DBZ films. He later voiced Goku in Episode 108-158 of the international Ocean Group dub of DBZ before quitting so that he could focus on his comedy career. He also voiced Master Roshi in DBZ Episode 63 (50 in edited episode numbering) of the U.S. Ocean Group dub.