Actually Shishio's posts remind me of Cinera. The closest thing to him. Both have the exact same mathematical approach to feats and debate. Only difference is at times Shishio seems like he just snorted a line of coke before having a go at his keyboard.
I can't remember, is Cinera a reincarnation of Sir_L or whatever their name was?
The one with the Akashi avatar that was banned about four times, kept coming back under a different name and had a logic equation that definitively proved that Mihawk > Shanks
Cause that guy was my favourite Zoro fan