Hamma Jamma is a Hammer Bro. who fights in the Glitz Pit in Paper Mario: The Thousand-Year Door. He fights with Bamma and Flare. It is possible that Bamma and Flare are his brothers.
Hamma often talks about his grandfather; coincidentally, Mario may have actually met this highly talked of grandfather, as Hamma once said his grandpa's turf was "World 7-1" (Presumably from the original Super Mario Bros.). He also talks to Mario about his other family members, such as his father, the only known "Business Bro.".
He and his teammates are ranked 3rd in the Glitz Pit when Mario starts his Fighter career.
 Glitz Pit Fighters 
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| Champion: | The Great Gonzales |
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| Former Champions: | Rawk Hawk · Prince Mush |
| Major League Characters: | The Koopinator · Hamma Jamma · Bamma · Flare · Craw-Daddy · Shellshock · Spiky Joe |
| Major League Teams: | Chomp Country · Hamma, Bamma, and Flare · The Fuzz · Magikoopa Masters · Shellshockers · Poker Faces · Tiny Spinies |
| Minor League Characters: | Cleftor · Bandy Andy · Master Crash · King K. · Sir Swoop |
| Minor League Teams: | Armored Harriers · Bob-omb Squad · Punk Rocks · Hand-It-Overs · Spike Storm · Dead Bones · Pokey Triplets · KP Koopas · Goomba Bros. · Mind-Bogglers |
| Minor League Replacement Teams: | Wings of Night · The Destructors |
 Hammer Bros
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| Species: Boomerang Bro. | Chariot Bro | Circus Bro | Dark Boomerang Bro. | Dark Fire Bro. | Dark Hammer Bro. | Fire Bro. | Hammer Bro. | Ice Bro. | Juggler Bro | Shady Sledge Bro | Sledge Bro |
| Characters: Bamma | Captain | Flare | Hamma Jamma | Mr. Hammer |
| Groups: Hamma, Bamma, and Flare |