Boom

Boom is Kat Manx's assistant serving as the S.P.D. Orange Ranger.

Early Life
Boom enrolled in the S.P.D. Academy, but flunked out just three days after her arrived. Kat Manx saw potential in him and made him her lab assistant. Boom never told his parents about being kicked out of the academy due to his incompetence. He managed to convince them that he was the "Orange Ranger".

S.P.D.
Boom would test out Kat's inventions, disguise himself as a villain for the cadets to battle against in training and once helped demonstrate the Delta Morphers by being put in the containment on the guilt of eating chocolate cake.

His lack of heart to tell his parents he flunked out came back to haunt him when they came to visit him. He was forced to don a mock-up costume and team up with the B-Squad, putting the true Rangers in trouble. He then returned to what he knew best, and finally told his parents about his real job: guinea pig for Kat's inventions.

Boom showed his courage at the end of the Troobian-SPD conflict. He was with Kat when Broodwing and his forces attacked Delta Base, sending hundreds of Krybots to fight the SPD cadets. Broodwing soon caught up with Boom and Kat and trapped them, but Boom summoned R.I.C. who set them free. Later, after Broodwing was defeated, Omni arrived, sending his own army of Krybots to Earth. Boom helped inspire the cadets to stay and fight, saying that even if they all left, he'd stay for the B-Squad who were captured by Emperor Grumm. And so, Boom fought alongside Kat and Sam against the Krybots and helps hold them off until reinforcements arrive in the form of the Nova Ranger from the future and troops from headquarters including Commander Fowler and Sergeant Silverback. With their help, the Krybot forces are destroyed. The Power Rangers later returned and destroyed Omni and as they were celebrating the return of Doggie and his wife Isinia, Grumm returned and Boom watched the two quickly battle it out before Doggie captured him.

Power Rangers Ultimate Alliance
Boom was with Kat when she paid Cruger a visit at Theta Quadrant and was dragged along with her, Cruger and Sophie to the Abyss of Evil from the future. Cruger later handed him the sixth Delta Morpher, which allowed him to actually become the S.P.D. Orange Ranger for a while.