Gardevoir

She could be considered a "yandere" but she is closer to an insane worshipper. She is obsessed with gaining the love of Megalatron. She constantly comes up with plots to make Megalatron love her. She is also powerful and protective. She has the abilities of a normal gardevoir and some dark magic. She knows that Megalatron has a girlfriend, she's even friends with her. This has mostly slowed her attempts at making him love her. Her plots are like a cartoon supervillain, except sometimes NSFW. She is aware that Megalatron hates her.