No, this is something different from a character you hate. Let me tell you in summary, characters in a series through your opinion that seem to serve no purpose, just seem to be created for gimmick-ish purposes, or characters that sometimes give a feel as if they're just created as fangirl/fanboy bait or has no impact upon the story's development or the progression whatsoever.. Nevertheless, vote here for the most "Worthless" or alias "No-purpose" anime/manga/game character here.
Absalom (One Piece) – He never really had much of a purpose as one of Gekko's men in my view. Seemed more of some furry with a fetish for human woman.
Ten-Ten (Naruto) – As if I'd fucking forget her ass. No development, no backstory, no nothing.