Antagonists

An antagonist is defined as a character who opposes or is hostile towards the protagonist(s). Any character can be defined as an antagonist if...

• The character sets up conflicts, obstacles, or challenges the main character(s) of the episode.
• The general cause of the main character(s) problem.

If a character is not antagonistic throughout most, if not all, of the episodes they make an appearance in, they cannot be considered an antagonist.