Wittenberg voices Kakashi Hatake in Naruto, Michael Lee in Witch Hunter Robin. Bash Johnson in Randy Cunningham: 9th Grade Ninja, Franz’s singing voice in the Disney animated film Planes, The Vision in Marvel Heroes, Lang Rangler in JoJo’s Bizarre Adventure: Stone Ocean, and Time Baby in Gravity Falls. In video games, he voices Trigger Happy from the Skylanders series, Mad Doctor from Epic Mickey, and Buddy Alexander from Resident Evil: Damnation.
He is also an adaptive scriptwriter for English dubs of anime whose work includes episodes of the Digimon television series. Wittenberg also narrates many documentaries and specials for the Travel Channel and the Food Network.