Mokumon

Mokumon is a Smoke Digimon whose name is derived from the onomatopoeia for smoking (もくもく), and as such it is made of smoke. It is a Digimon Baby which surrounds its body with a vaporous smoke. Unlike other Digimon, it is unique in that its DigiCore is bare, and in order to protect it, it conceals the DigiCore within a lot of smoke. Because its DigiCore is bare, its body is shrouded in smoke while it burns and it is a Digimon with an unusual way of life. The smoke sometimes burns the DigiCore due to an outbreak, but this doesn't seem to harm Mokumon or others. Also, because it is still in the middle of digivolving, when it encounters an opponent it immediately flees. If you happen to see one, it would be best to be quiet.

Digimon Adventure: Anode/Cathode Tamer
Mokumon are recruitable enemies in Temple of Darkness - Right, Shrine of Evil - Left and Right, and Piemon's Palace. Mokumon is a Fresh level Sky Digimon.

Digimon Adventure 02: Tag Tamers
Mokumon are normal enemies in Ryo's side of Ocean Continent, Ocean Cave 2, and Water Cave 2.

Mokumon digivolves to DemiMeramon in lines 40, 46, 52, 61, and 70.

Digimon Tamers
A group of Mokumon were employed by Shibumi as his helpers when his consciousness was in the Digital World and his body was comatose in the Real World. One of the Mokumon takes Shibumi's form to enter the Real World and sneaks a Blue Card into a boy's card deck. Yamaki chases the Mokumon, thinking it was Shibumi, but the Mokumon disappears into a pile of smoke, revealing that it was really a Digimon. Two other Mokumon appear in Shibumi's library in the Water Space.

Digimon Tamers: Brave Tamer
A Mokumon is in Impmon's party when fought to save Takato Matsuki and Guilmon

The Mokumon card, titled "Smoke Screen", is a Rank 0 Item Card which allows the party to flee from battle.

Digimon Frontier
A Mokumon appears at the Autumn Leaf Fair.

Digital Monster D-Project
Mokumon digivolves to DemiMeramon. A Mokumon appears as the underling to Impmon in the second Area, "Forest". After being defeated, it becomes a Minomon.

Digimon World Championship
Mokumon appears in Sizzling Desert and South Bridge Valley, and can digivolve to Kapurimon with 20 Machine AP, Koromon with 20 Dragon AP, Sunmon with 20 Holy AP, or DemiMeramon by passing time.

Digimon Pendulum III: Nightmare Soldiers
Mokumon hatches from the Digi-egg, and digivolves to DemiMeramon after waiting about an hour.

Attacks
 * Smoky Blow (Smoke) : Scatters the smoke issuing from its body all around, then seizes the opportunity escape when the opponent loses sight of it.