Ninja Baseball Bat Man[a] is a 1993 beat 'em up arcade video game developed and published by Irem.

Each player chooses from among four characters: Captain Jose, Twinbats Ryno, Beanball Roger, and Stick Straw.

[5][6][7] Like Irem's previous beat 'em up arcade game, Undercover Cops, Ninja Baseball Bat Man features playable characters with several different fighting moves that sacrifices health in order to annihilate every enemy on the screen.

Irem America opened its U.S. office in 1988 in Redmond, Washington, headed up by Frank Ballouz (founder of Fabtek, a thriving video kit company and former North American publisher of several arcade machines by Seibu Kaihatsu and TAD Corporation) and National Sales Manager Drew Maniscalco.

During this time, Drew created the "Ninja Baseball Bat Man" video game concept (including the English title, plot and characters) and licensed it to Irem America in 1991.

While the title and characters were Drew's concept, Irem Japan programmed the arcade game, and modified the look of its prototype.

[9] During the development of the 4-player beat 'em up version, the prototype names of the four main characters were Captain Jeff (red), Nunchaks Sugar (green), Hammer' Eddy (yellow) and Naginata Jimmy (blue).