From One Piece. Kaido of the Hundred Beasts is one of the for Emperors of the Sea and Captain of the appropriately named Beast Pirates.
I absolutely loved the chapter that introduced this guy, he literally appeared/fell out of nowhere and left a crater of awesomness in the expected storyline. I have to be honest, I already feared he would be a letdown when he showed up, something like a midget with a mustache, but by all the Seakings, was I wrong. Turns out it is absolutely impossible to not call this guy by his nickname, because seriously just look at his design. Kaido the Beast is by far the most impressive badass to ever step into a scene in the whole of One Piece, imo.
Hope you like it ^^