Biased

A biased debater is when a user has a unfair prejudiced against a Character because of their respective powers or series that they came from it can even be for personality,characteristics, and or design.

Example
I hate (or dislike) the Beyonder because of marvel since they made it seem he was TOAA which he isn't and I haven't read any of the secret wars to know this since he doesn't beat my character known as Asriel Dreemurr

Credit to FBO wiki for this page