Devil Mametchi is identical to Mametchi, except its eyes are always half-open, and it has large devil wings on its back.
According to Professor Banzo, Devil Mametchi is said to be a liar who is easily deceived, always tired and refuses to take responsibilities.
On Virtual Pets
Debirutch no Tamagotch
If the meters are kept full and the Devil Power at 0 for six days, Devil Mametchi will offer a handshake when its DP is at 1 or 0. Accepting will make it immediately evolve into Clione Deviltchi.