We don't see this particular version of Kamesennin often. The first time we see him buffed up and awesome like this is when he first unleashes the attack that Goku would later make his own.
Doom said: Y'know I was rereading Dragonball and it's rather weird to think that this guy was the most powerful character in the series at one point.
Also the most powerful in the world as well. He just didnt persue fame like Hercule. You would think with Hercules fame, someone would have done some research on who "Used to be" the strongest person on the planet and set up a fight between them 2.
