Raremon

Raremon is a Ghost Digimon that is slimy and has a putrid smell that can knock others out. It is inspired by the Godzilla monster Hedorah, the Smog Monster, as well as the Pokemon Muk. He tried to mechanize his body and live longer but he became like this because he failed to do so. The data that forms his body collapses and becomes scurvey, yet he lives and continues on. Because he has attack power and no intellect, he almost cannot win against other Digimon of the same generation.

Digimon Adventure
A Raremon was seen working for Myotismon when it terrorized the bay looking for the Eighth Child. Kabuterimon engaged in battle with it and Raremon shot his Breath of Decay attack in his face and pulled him underwater. Kabuterimon broke free and rose to the sky. He destroyed Raremon with his Electro Shocker attack.

Digimon Adventure 02
When Digimon started to appear in the Real World, some Raremon were on the India/China Border, one was herded in New York City, and one was in Australia being herded to the Great Barrier Reef.

Digimon Frontier
One of the Pagumon skipped its Rookie form and Digivolved to Raremon to fight Koji. Agunimon fought Raremon until he reverted back to Takuya for some unknown reason. Raremon knocked Koji into a hole where he found the Human Spirit of Light and became Lobomon for the first time and defeated Raremon. Another Raremon was seen at the Great Trailmon Race where one was on the track and chased J.P..

Digimon Adventure V-Tamer 01
While Taichi Yagami and Zeromaru were talking to a Biyomon, a Raremon attacked them and was easily defeated by Zeromaru.

Digimon Next
A Raremon is the partner of Saito's teacher/master Kondoo. In the Virtual World Tournament, Tsurugi Tatsuno and Greymon face off against Kondoo and Raremon and defeated them. Raremon is unscrambled when Shou and Peckmon come into view.

Digimon World 2
Raremon digivolves from Hagurumon and can digivolve to Vademon or Garbagemon Depending on its DP.

Digimon World 3
Raremon are randomly encountered in the sewers of Asuka City and are also used by the A.O.A found there.

Digimon World 4
Raremon is seen in Machine Pits' dungeons.

Digimon World DS
Raremon digivolves from Otamamon. Raremon also appears in Drain Tunnel.

Digimon World Dawn/Dusk/
Raremon digivolves from Gizamon and can digivolve to Datamon.

Attacks
 * Breath of Decay (Sludge): Fires a green ball from his mouth.
 * Acid Sludge: Fires a green acid from his mouth which melts away whatever it hits
 * Stinking Gas