Introduction
JoJo is Joeseph Joestar from the 2nd series of JoJo's Bizarre Adventure (vols. 6-12). According to the story of the game, Joeseph is made younger by Alessy, who then runs away, leaving Joseph young until he defeats Alessy. I don't know if this actually happens in the manga, though. He plays like Joseph, but without a stand, he loses quite a few moves, but he gains some as well.
Moves List
Normal Moves
Sobat- 6+C or 4+C
Slide kick- 3+B or 3+C NOTE: C version sweeps
Bola- S NOTE: Can be used in air
Bola Uppercut- 6+S NOTE: Juggles
Bola Sweep- 2+S
Slide Bola- 66+S
Special Moves
Hamon Overdrive- 236+(any attack) NOTE: The C version is delayed, but juggles.
Hamon Cola- 623+(any attack) NOTE: Juggles
Bola Rush- 236+S,S,S (upper,juggles) or 236+S,S,6+S (hop attack) or 236+S,S,2+S (sweep)
Hamon Bola- 214+S
Bow Gun- 63214+(any attack) NOTE: In the C version, Joseph fires the lead ball in the opposite direction. It will attack the opponent from the other side. It will not connect if Joseph is hit.
Super Moves
Master's Teachings- 236+(2 attacks)
Hamon Beam!- 214+(2 attacks)
The Basics
Combos
Slide Kick xx Hamon Overdrive
Slide Kick xx Bola Rush (upper)
c.A, c.A, s.B xx B Hamon Overdrive
j.C, c.B xx B Hamon Overdrive
c.A, c.A, s.C xx Bola Rush (upper)
j.C, c.A, s.C xx Bola Rush (upper)
C Hamon Overdrive (x3) [can get up to 5 on Jotaro]
Super Combos
(in corner) Bola Upper, s.A, s.A, s.B xx Master's Teachings
j.C, c.A, Slide Kick xx Master's Teachings
Advanced Strategy
The fact that the slide kick can cancel into any move is very advantageous. Basically, you can run away from the enemy, do a slide kick to punish your opponent for chasing you and cancel into anything you like.
The Hamon Beam is a terrible super to use point blank (since it can be ducked easily), and cannot be comboed into, due to delay so here is a set-up: throw your oponnent and do the Hamon Beam right before they hit the ground. By the time the start up is finished, your opponent will get up and eat the beam for massive damage!