Most powerful character I've played?

I think by the sheer virtue of the fact that I went a very long time in my RP life playing either vastly underpowered or lacking powered characters it's probably...

Rin

I also rarely ever played main characters too so that's also a huge factor in it

The mere fact that I've played Rin this long and (apparently????) well is a huge testament to what a strong muse he is for me

but Eitarou Sakuma from Macedemi Wasshoi! comes in a close second because he's actually kinda way more powerful than the start of the series lets on

the problem there being that his power is largely implied and only seen once, so it's not a power I was really capable of using in game often