Jun Sato is the main character of Kimon Youitan. 

In his original material - he was an ordinary student who transferred to Hiyoko Academy, however he ends up getting attacked by an unidentified enemy - leading to him with his friends at Hiyoko Academy (all with their own kind of powers) using powerful techniques against the enemy.

From that moment on, he decided to take the fight to the demons himself. Alas, he is a re-incarnation of Shuten-doji, who is actually the leader of all Demons.

For Eight Marbles 2X, it seems he has decided to show up as a spanker-type character, but at the cost of speed - he has more power and force.

A taunt that can be cancelled with a normal or special move. If successful, the Special Gauge will increase.

Jun does a damaging step forward then thrusts forward his fist.

It doesn't have a lot of range.

Jun thrusts his fist forward in a wind kind of fashion.

It has some windup time, but can be used in a combo or as a combo starter.

Steps forward before unleashing a flurry of attacks.

It is a rather easy move to hit and has long reach.

Alternate version of Demon God Kishin.

Steps forward before attacking, grabbing and spanking.

Jun emits pure energy before launching a projectile on hit.

A move like Shoryuken (Ken's move, from Street Fighter), and can be used as a anti-air. Not a very reliable move.

A standard projectile based move.

A move that extends a weight towards the opponent. There is a lot of lag if you miss.

A move that can offset the opponent's own with one shot.

Can be cancelled into other special moves.

Uses 2 bars of super.

Projectile-based super move.

Uses 2 bars of super.

An anti-air super special move.

There are i-frames on startup.

Uses 3 bars of super.

Jun wildly attacks the enemy.

Uses 3 bars of super.

Super variant of Raging Fist.

Jun hits the opponents rear countless times, dealing butthurt and massive damage.

Uses 4 bars of super.

Jun creats a giantic shockwave around himself.