Arcade (1993):
1-4 players(adjustable as 2 or 4 players in MAME's dip switch settings, the 4 player version doesn't force specific coin slots on specific characters)
Characters:
Captain Jose(red, average), Twinbats Ryno(green, small, fast), Beanball Roger(pictured above, yellow, wide, strong), & Stick Straw(Blue, fairly strong, best reach)
Controls:
Button 1: Attack
Button 2: Jump
-After the 2nd hit of the basic strike combo, any other hit can be replaced by forward & 1 for a different attack.
-2, 1: Jump Attack (Jose can combo this into another attack)
-Forward & 2, 1: Alternate jump attack (Jose can combo this into another attack)
-1 & 2: Special (only drains health if it connects)
-2, forward, away & 1/2, away, forward & 1: Super (drains 1/3 of the health bar)
-Double tap Left/Right: Run
1: Running strike
2: Alternate running strike
-Walk into enemies: Grab
1: Strike(multiple times to combo)
Forward & 1/2: Throw forward(always a satisfying crack with the baseball bat, actually)
Away & 1/2: Throw behind
Down & 1/2: Slam
1 & 2: Grab special (uses about 1/6 less health. All, but Roger, can combo theirs into a recovery attack[explained directly below])
-Wiggle the joystick/directionals and mash the buttons: Recovery attack (depends on the situation)
-Hold 1, press 2: A unique move for each character (for Jose, add away & 2/away, forward & 2[slightly different move, the former works much more often though] after it first connects to extend the move, which can then be further extended by a recovery attack. For Ryno, 2, 1 & 2 does practically the same thing, and either way you start it, it can be combo'd into Up, Down & 2 while still in the air, which can then be combo'd into a recovery attack)
Character specific moves:
Jose:
-Run, then away & 2 simultaneously
-Run, then away, forward & 2(basically both of these running moves are the same exact thing as the hold 1, press 2 extension moves, only this time, this one is easier to pull off. They can also both be combo'd into recovery attacks)
Ryno:
-2 toward wall(edge of screen), away & 2
-2, Up, Down & 2 (can be combo'd into a recovery attack)
Roger:
-2, Down & 1 (can be combo'd into recovery attack)
-360(I think starting with Up, and either direction from there) & 1
Straw:
-360(Up to away to Down to forward to Up) & 2 (can be combo'd into a recovery attack)
You can strike enemies when they're down, by pressing 1 when close enough. Mostly useful in boss fights.
Thank's to Goh_Billy's guide for a decent amount of it: http://www.gamefaqs.com/arcade/568361-ninja-baseball-bat-man/faqs/53661
Interesting aspects of the game include a car you can get in to run enemies down(you start stage 2 in one), and button mashing bonus stages(trying to crush a living baseball in the characters hands, or punching one(also trying to crush it?]) for bonus points.