Bacterian is a vagabond who has never once washed himself or brushed his teeth during his life. He enters the 21st World Martial Arts Tournament, possibly in hopes of emerging victorious and using the reward to live a higher-expense lifestyle. He uses his stench as a tactical advantage, preoccupying his opponents with clenching their nostrils. His repulsive special abilities include his flatulence, spitting and smearing opponents with sweat from his groin. He also has super-human strength as stated by Yamcha
Bacterian is matched against Krillin in the quarterfinals of the tournament, where he almost gets the better of the martial artist. This is until Goku assures Krillin that because he is missing a nose, he is just imagining the smell. With this reminder, Krillin almost instantly makes his comeback, defeating and rendering Bacterian quarterfinalist.It is in a brief appearance during the King Piccolo Saga that Bacterian is revealed to be homeless. Unfortunately he is assaulted and killed by King Piccolo's demented offspring, Tambourine, who takes pleasure in tormenting him as he is unfazed by Bacterian's strong odor (though he does comment that killing Bacterian was his "smelliest job"). He kills him by channeling his ki into an electric attack and electrocutes him to death. Later in the saga Bacterian's life is restored by a wish made to Shenron using the Dragon Balls.
- He has superhuman strength.
- The Smelly Finger Attack - Bacterian reaches inside his underwear and rubs his groin for a bit then takes out a penis sweat filled hand and touches his foe with his pointer finger.
- Bad breath - He inhales and then spews a killer breath.
- Deep Throated Mucus Filled Loagie Of Death - He spits out a mucus filled piece of saliva
His name is a pun on bacteria (in fact it is only the letter n in the end) and it well suits him as he probably does have bacteria.
- A story about pirates told by Krillin and Master Roshi features a pirate captain almost identical to Bacterian.
- Since he is not seen after his revival, and he is homeless, it is unknown when he died after this