Who the hell is Mr Satan ?

'Mr. Satan' is the collective nickname of Hercule, although he's not referred to by that name once in the story. In case you haven't unlocked him as a playable character yet, I'll spare you the time of having to make another submission in the future by explaining it here...

To unlock Hercule, raise Gohan, Piccolo, Trunks, and Vegeta to Level 50. Then, break their respective barriers and acquire the trophies within them. After all of the trophies have been collected, Hercule will be a playable character.

Notes:

1. Trophies will be placed in the atrium at Capsule Corporation. 2. Goku's trophy is acquired by defeating Perfect Cell in battle.

3. Gohan's barrier is coloured a light blue and located in the woods outside Gingertown.

4. Piccolo's barrier is coloured a bright green and located in a cave on New Namek.

5. Vegeta's barrier is coloured blue and located west of Dr. Gero's lab in the Northern Mountains.

6. Trunks' barrier is coloured a bright red and located in the northeast segment of the Triceratops Jungle.

Hope I helped =)