拳王

拳王
The meaning : Fist king
How to prounce :Kennou

"拳王（Kennou）" is a nickname of character "Raou" in Japanese comics. He was a very strong master, and it was the person who deserved to be you to right call it King.
"拳" is a meaning of a fist, and there is the following nickname elsewhere, too.

拳神（Kenshin）　・・・Fist God
闘拳（Touken）　・・・Fist which fights
拳闘士（Kentoushi）　・・・Boxer
鉄拳（Tekken)　・・・　Iron Fist

Japanese Cool Nickname