Sirius and Harry are parallels. Grew up in an abusive household Had a best mate who they loved more than anything (Harry loved Ron or fight me - Harry's treasure that he could not live without in GoF) Stayed at said best mate's house and became part of the family Have nightmares PTSD
I feel like I downplay what James is really about for certain people, and change his personality when roleplaying with certain characters. He's a schizophrenic sociopath, a manipulator, a liar, a flirt, a cocky son of a bitch, and to top it off a killer. He's not just another flirty guy, he's unique and crazy, and I don't credit him enough with that when using him, and I'm sort of sick of downplaying him.