Yarmon

Yarmon (ヤーモン)
A Lesser Digimon that evolved from Keemon. Its personality becomes twisted, and when it finds a Digimon having fun, it covers them with ink using its "Paint Splash", which it spews out of its mouth. Yarmon enjoys seeing the stunned Digimon.

Etymology
Yaa: Might come from yancha, which means mischievous.