Spartan-Z07, also known as Boomer K is a Spartan-II soldier entered the Nintendo, Sega, and Capcom worlds through a wormhole on one of his missions in the UNSC. He is quite the sharp shooter, and tends to make jokes.
All-Star Heroes: The Series
Boomer K is a playable character in All-Star Heroes. He is a mini-boss at first, but only because he doesn't know where he is.