Hey, sorry for the slow reply, I was out last night and then my sister last minute said she needed bunting so I've been sitting here furiously knitting for the past few hours

Right, so if you're having him as a return character I think it's ok, but you're going to have to be considerate.. My advice is pick a story which stops it becoming OTT (which you have) and be consistent with it

If you're going to play him as a new student, he's definitely OP :P