Walker (Danny Phantom)
Walker is a major antagonist in the Danny Phantom cartoon series, serving as the main antagonist in the episodes "Prisoners Of Love," "Public Enemies," and "Claw Of The Wild."
He is the warden of a prison in the Ghost Zone that imprisons anyone who breaks his rules. When Danny Phantom causes a prison breakout, he obsesses with getting revenge against the boy, making him one of Danny's most vile and cruel adversaries.
He was voiced by James Arnold Taylor.