PersonDavid Graham9 credits in the catalogue: acting.On the wikisPeppa Pig WikiActingDanger Within1959Lt. MoxhayThunderbirds1965Engineer BrainsThunderbirds1965Aquanaut Thunderbird 4 Gordon TracyThunderbirds Are GO1966Gordon Tracy / Brains / Aloysius Parker (voice)Thunderbird 61968Gordon Tracy / Brains / Aloysius Parker (voice)King David1985Ephraimite ElderPeppa Pig2004Grandpa PigPeppa Pig2004Mr ZebraThunderbirds Are Go2015Aloysius Parker