Numemon

Numemon is a Champion Level Mollusk Digimon that is usually found in the sewers and fake vending machines of the Digital World.

Evolution

 * Adult (Champion) - Numemon
 * Perfect (Ultimate) - Monzaemon/ Warumonzaemon

Attacks

 * Poo Throw (Nume-Sludge/Party Time): Hurls its own waste at opponents.
 * Smash: Smashes into its enemies.

Digimon Adventure
The DigiDestined encountered the Numemon in the sewers after making it out of the factory that Andromon was in. Some were seen in fake vending machines where one of them tried to get a date with Mimi and got angry when she turned him down. The Numemon chased them, leading each of the DigiDestined into Monzaemon which scared the Numemon away. Monzaemon captured all the DigiDestined except Mimi and Palmon. The Numemon later appeared to protect Mimi from Monzaemon before Palmon Digivolved to Togemon and beat the Black Gear out of him. Later on, a bunch of Numemon worked on a ship run by Cockatrimon, a servant of Etemon who fled when Togemon knocked Cockatrimon into the ship's smoke stack. A bunch of Numemon were customers at Veggiemon and Digitamamon's diner and some were being trained by Nanimon for Myotismon's army. A bunch of Numemon were enslaved to WaruMonzaemon, a slavemaster working for Machinedramon. They were freed by Kari but they died at the hands of Machinedramon.

Digimon 02
On his first trip to the Digital World with T.K. and Kari, Davis encountered a vending machine filled with Numemon before they met up with Tai. Some Numemon assisted Davis and a bunch of RedVeggiemon in repairng the Digital World and getting Veemon to Digivolve to his Champion Form. A bunch of Numemon were among some Digimon who crashed Matt's concert at Christmas.

Digimon Tamers
A Numemon, alongside of a Veggiemon, was destroyed by Gorillamon.

Digimon Frontier
Some Numemon were seen at the Fortune Teller Village, the Autumn Leaf Fair and the Great Trailmon Race.

Digimon World
In the game a Numemon is located in Factorial Town. Once it is defeated it sells items in the Item shop's basement. To obtain a Numemon, which I doubt you would want to, you must raise a digimon very poorly. His finishing attack is Party Time.