Hellboy is a beast.. he may be inconsistant but he's beaten... Aoki, Yves, JZ Calvancante, Gomi, and Uno..
Those are some legit opponents.
Aoki is that one dimensional anybody has a reasonable chance of beating by KO, he is like the polar opposite of Daley, Plus Aoki was in a tough fight with Uno just a few hours before. That and the fact that Aoki has beat him twice kind proves it was a bit of a fluke.
Yves, JZ, Gomi and Uno were good wins but they were a long time ago and he has kind of declined since those days IMO but he still brings a good fight to anyone in the division, he is a warrior and i love watching him fight, i just think he is greatly overrated. It seems like people actually rank him higher now than they did in 2005, which is just ridiculous.