Here are the bacteria foursome from Atlantis Squarepantis, but as females and one male (blue critter with spikes) who are good guys just like the Stomach Bug and find a home in someone's digestive system.

I am not sure about their bios, but I have made names and claimed voices based off the Wonder Pets.

List of names and voices
Mingle (yellow) / Ming Ming the Duckling
Tucker (blue) / Tuck the Turtle
Lolly (red and black) / Lenny the Guinea Pig
Ossie (green and orange) / Bunny (CTCD)

CTCD = Courage the Cowardly Dog

List of weaknesses
Mingle (yellow) - She always loses at dancing, thus gets knocked out into an atom, thanfukly she can regenerate herself.
Tucker (blue) - He has an aggressive brother who is an H. Pylori and fought each other even during ulcerative colitis.
Lolly (red) - She wears a helmet with socks from a dead pathogen because she is scared of her identity/historical war trauma.
Ossie (green) - She is sensitive both in and out of her cellular build, also gets hurt easily especially when stomped on.