Boom Boom

"I won't let you look down on me like you always did before, Mario!"

- Boom Boom

Boom Boom is a henchman of Bowser. He is an antagonist of the Mario series. Boom Boom first debuted in Super Mario Bros. 3, where he was a boss that Mario or Luigi mostly fights in numberous fortresses everywhere on Mushroom World's kingdoms, before the player fights a Koopaling in an airship. After more than twenty years passed, Boom Boom then later made his next appearance in Super Mario 3D Land as one of the story's main antagonists who often appears in airships, along with his new partner Pom Pom.

Boom Boom is set to appear in Super Mario Bros. X: Sea Side Adventure as one of the series main antagonists. His role in the series would be a bit more serious as well and will also be one of its comical villains. Boom Boom will be given a background story as well. It is confirmed that Boom Boom will use his abilities to multiply himself once again.

Background
Boom Boom was a childhood friend of the Koopalings. During his youth, Boom Boom was regarded as a dropout by many people. Until one day, he wanted to prove to everyone and to himself he is not a dropout. Boom Boom eventually awakened his powers and showed everyone his true strength. The Koopalings have aknowledged their friend. Boom Boom was eventually recruited to the Koopa Troop by the Royal Koopa Family. One day, Boom Boom with the Koopalings and the Koopa Troop went to invade the Mushroom World's eight kingdoms. Despite Boom Boom's effort, he was defeated several times by Mario and Luigi, failing to protect the Koopalings and their father. Boom Boom has lost his powers since his latest defeat, so he can no longer fight for Bowser. But Boom Boom still had guts, so he continued to train himself for several years so he could fight Mario again.

About twenty years later, Boom Boom with his new partner Pom Pom, with the Koopa Troop, went to the Mushroom Kingdom during a stormy night, stealing the Super Leaves from the Tail Tree, while Bowser kidnaps Princess Peach. Boom Boom fought Mario many times, but lost. False Bowsers and Pom Pom continue to handle Mario. Meanwhile, Boom Boom went on hiatus in the Koopa Kingdom after losing many times. Princess Peach attempted to escape, but Boom Boom, Bowser and the Koopa Troop all went to recapture her. After resting enough, Boom Boom goes back to fight with Mario, this time with Pom Pom. But they both lost against him, despite their best efforts. After being defeated, Boom Boom and Pom Pom order the Koopa Troop to aduct Luigi from the Mushroom Kingdom. Mario, having learning what happened to Luigi after saving Princess Peach from Bowser, went on another quest to save Luigi from them. Mario and Luigi finally together went on another adventure, while continuing fighting Boom Boom and Pom Pom.

Years later after Boom Boom failed again, he trains himself again. Even though he finally regains his original powers he lost, he also is stronger than he was before. That was prior the events of Super Mario Bros. X: Sea Side Adventure.