>>9819832First - trannies started associating themselves with anime. Since they're massive attentionwhores that run on other people's acceptance and compliments, they started using anime pfp's and anime reaction images for other people to mistakingly associate them with something cute (the results of this phenomenon are questionable).
Using characters such as Felix in case they're having an argument with a normal person gives them also some sort of boost (?), in that they think they're intimidating them with the character's (a tranny's) cuteness.
Anime characters are above all also their coping objects, that make them fantasize about having their appearance.