Peter MacNicol

Grey's Anatomy

as Robert Stark

2005

American Dad!

as Santa's Elf (voice), as Old Man Hanson (voice), as Angel (voice)

2005

24

as Tom Lennox

2001

Cheers

as Mario

1982

Young Justice

as Professor Ivo (voice), as Professor Ivo / Amazo / M.O.N.Q.I. (voice), as Professor Ivo / M.O.N.Q.I. (voice)

2010

Numb3rs

as Larry Fleinhardt

2005

Marvel's Agents of S.H.I.E.L.D.

as Professor Elliott Randolph

2013

Boston Legal

as Dr. Sydney Field

2004

The Big Bang Theory

as Robert Wolcott

2007

The Batman

as Langstrom (voice)

2004

Doc McStuffins

as Egghead (voice)

2012

The Mindy Project

as Rabbi Adler

2012

Star Wars Rebels

as Tseebo (voice)

2014

Veep

as Jeff Kane

2012

The Wild Thornberrys

as Raju / Monkey (voice)

1998

All Rise

as Albert Campbell

2019

Tales from the Crypt

as Austin Haggard (segment "Let the Punishment Fit the Crime")

1989

Buzz Lightyear of Star Command

as Major (voice)

2000

Ben 10: Ultimate Alien

as Oliver / Forever Knight #1 (voice)

2010

Justice League Unlimited

as David Clinton (voice)

2004

CatDog

as Runt (voice)

1998

Ally McBeal

as John Cage

1997

Danny Phantom

as Sidney Poindexter (voice)

2004

A Series of Unfortunate Events

as Ishmael

2017

Rapunzel's Tangled Adventure

as Nigel the Advisor (voice)

2017

The Angry Beavers

1997

The Spectacular Spider-Man

as Otto Octavius (voice), as Master Planner / Doctor Octopus (voice), as Otto Octavius / Doctor Octopus (voice), as Master Planner / Otto Octavius (voice), as Master Planner (voice), as Doctor Octopus (voice)

2008

Fairly Legal

as Judge Smollet

2011

Harvey Birdman, Attorney at Law

as X, the Eliminator (voice), as X the Eliminator (voice)

2000

All's Fair

as Robert DeLancie

2025

CSI: Cyber

as Simon Sifter

2015