Pablum and Otis Weaselgraft are a duo of villains who scheme to kidnap Martha to make money out of her. Pablum is a scientist and Weaselgraft is Martha's sinister arch-rival. Weaselgraft is the leader and Pablum is the sidekick of Weaselgraft though he constantly gets abused by Weaselgraft.Weaselgraft is the main antagonist in Martha Speaks (TV series)