First off I main Tager, I have a habit going to characters that are powerful and/or slow, maybe because I suck with characters that are fast and have the damage potential like paper. Also, he's giant and red, and I got to know him better playing the story love his personality and his relationship with Kokonoe(character I hope comes to be playable one day) to the point of having awkward dreams and inappropriate jokes.
I tried other characters too, tried Bang because he's so f*cking awesome, really a manly hero character?! to bad I sucked with him no matter how hard I try. Reason I don't choose other characters, probably because I suck with them or I have an odd seething hate for them like Jin(stems from my hatred of Ky and his ice attacks) and Noel(polar attitude of becoming an insta wimp without her guns.
Now that I think about it I suck with Potemkin on GG, but good with ABA and Baiken...