My favorite was probably a dude I made for a RWBY rp that was an ex-soldier that was almost an icon of the nation he fought for. He was ordered to kill his wife for her being a traitor, so he did. However, once they tried to prevent him from burying her, he murdered his officer and any soldiers that resisted. Since he became wanted for desertion, he left and then blew up a checkpoint by overloading a reactor. He accidentally killed civilians in the process. From there, he entered into a deep depression and essentially drank himself into a stupor every night, reliving the killing of both his wife and the civilians. A Hunter took pity on him since he was obviously capable and dried him out. From there, he became a Hunter and utilized his exosuit combined with his blunted two handed sword that could turn into an emplaced HMG. His Semblance was that he designated an area as his domain and thus could not be moved from it and also took less damage to his aura in it.
He was interesting to play, especially since he was one of the only non-edgy characters and also the only one not based on hyper mobility or anime powers. It was also funny since he was able to take on the other characters since they were fast but squishy and he could plink them with bullets. His suit was bulky and like a Big Daddy met an EVA suit.