Boom Boom

Boom Boom is the most well-known of the species of the same name. He is a high ranking member of the Koopa Troop.

Super Mario Moose
Boom Boom appears in Super Mario Moose as the boss and main villain of World Boom Boom. He was originally going to be a main boss, but he was replaced by the Koopalings.

Mario All-Star Sluggers
Boom Boom appears in Mario All-Star Sluggers as a new playable character.

Mario Tennis: Court Chaos
Boom Boom will appear in Mario Tennis: Court Chaos as a new playable character. He will be a power character.

Warioz Amazing Adventures
Boom Boom first appears in the episode Wario vs. Boom Boom, where he challenges Wario into a fight and loses.