Mokumon

Mokumon (モクモン)
A Digimon Baby which envelops its whole body with a smoke-like vapor. It is a unique Digimon whose computer kernel (Digicore), said to be at the center of a Digimon's body, is bare, so it seems it protects its Digicore with Smoke. Because its Digicore is bare, Mokumon is a Digimon of an unusual way of life which covers its body in Smoke from when it was burned. It scatters the Smoke issuing from its body all around, then seizes the opportunity to flee.

Etymology
Moku: From mokumoku 「モクモク」 which means "cloud of smoke".

TCG
There are currently no cards featuring Mokumon in any Digimon TCG.