Data (voice) (1 episode)

Bob Wheeler (1 episode)

Bobert 'Bob' Wheeler (1 episode)

Self (3 episodes)

Ned Vanderhoff (6 episodes)

Self (4 episodes)

Data / Lore (2 episodes)

Dr. Altan Inigo Soong / Daystrom Android M-5-10 (1 episode)

Dr. Altan Inigo Soong (1 episode)

Dr. Adam Soong (10 episodes)

Data (3 episodes)

Data / Dr. Altan Inigo Soong (1 episode)

Brent Spiner

Edward Nigma / Riddler (voice) (1 episode)

Dr. Brakish Okun

Sidney (20 episodes)

Ezekiel

Puck (voice) (1 episode)

Phil (2 episodes)

The Sandman (1 episode)

Gall Trayvis (voice) (4 episodes)

Therapist (1 episode)

Brother Adrian (6 episodes)

Robots (voice) (1 episode)

Joker (voice) (2 episodes)

Brent Spiner (uncredited) (1 episode)

Dr. Kern (1 episode)

Brent Spiner (1 episode)

Brent Spiner (15 episodes)

(1 episode)

Purple Man (Voice) (1 episode)

Purple Man (voice) (1 episode)

Coach Mackey (voice)

Brent Spiner (voice) (1 episode)

William Quint (1 episode)

Dr. Strom

Tommy Katzenbach

Dr. Nigel Fenway (13 episodes)

Robert Gross

Dr. Arik Soong (3 episodes)

Vernon

Graham Barnes (1 episode)

James Campbell (1 episode)

Brad

Albert (1 episode)

Lt. Commander Data

Story

Devlin Bowman

Shoe Saleman

Dorris Grabney

Bob (4 episodes)

Pierre (uncredited)

Stromboli

Earl Mills

Conan O'Brien (voice)

Lt. Commander Data

Gil Godwyn

Lieutenant Commander Data

Dr. Bob

Dr. Brackish Okun

Professor Trent Davis (1 episode)

Upscale Guy

Dr. Strongwater (1 episode)

Danny Schlecht (1 episode)

Puck (voice) (4 episodes)

(uncredited)

Bob, the Dog Agent (1 episode)

Self (1 episode)

Lt. Commander Data

Brent Witherspoon

Data

Preacher Mann

Talk Show Guest (uncredited)

Ken McMahon

Data (176 episodes)

Bill Grand (1 episode)

Willie Vaughn (1 episode)

Jim Stevens

Franz / Dennis

(segment "Dead Run") (1 episode)

Bob Wheeler (6 episodes)

(1 episode)

Allard Lowenstein (3 episodes)

Reverend Peabody (1 episode)

Leonard Junger

Corinne's Boss

Fan in Lobby

Tom Fink (3 episodes)