Peter MacNicol is an American actor, voice actor, and comedian. He is well known for several roles, such as John Cage on the Fox sitcom Ally McBeal.
His Disney roles include Galen Bradwarden in Dragonslayer, Fenwick in Recess: School's Out, Major in two episodes of Buzz Lightyear of Star Command, Professor Elliot Randolph in the Agents of S.H.I.E.L.D. episodes "The Well" and "Purpose in the Machine", and Tseebo in two episodes of Star Wars Rebels. He also portrayed Dr. Robert Stark in seven episodes of the ABC series, Grey's Anatomy. He also voiced Nigel the Advisor in Tangled: The Series.