Ferguson's Disney roles include Lord Hater in the Disney Channel/Disney XD series Wander Over Yonder, Deputy Durland in the Disney Channel/Disney XD series Gravity Falls, and Friend Owl in Bambi II.
He is also a voice double for Lightning McQueen from the Cars franchise and Crush from the Finding Nemo franchise. He also has additional voices in Monsters University. He voiced Sir Bartleby in the Sofia the First episode "The Silent Knight," and the Wishing Well in the episode "When You Wish Upon a Well."
In terms of video games, he voiced Marluxia in the Kingdom Hearts series: such as Re:Chain of Memories and 358/2 Days.
- Zuzo 'Elena of Avalor'