Devitamamon

Devitamamon is a mega level digimon, which it's designs and name mean "Devil Digitamamon". It's Digitamamon's mega form called Pandora's Box, jammed with all the evil in the Digital World. It still has it's eggshell, with a brown head, 2 arms, 2 feet, 2 wings and a tail.

Digimon World Dawn & Dusk
Devitamamon can be obtained by getting Digitamamon to level 50, attack over 250, and 18,000 Dark EXP. You can also get him by DNA digivolving Scorpiomon with Pipismon or ExTyrannomon with Toucanmon if both are at level 44, with dark EXP of at least 13,000 with attack of 270+. It can be found at choas brain with stronger digimon near the back. This was the only game it was in, it is a dark digimon at it's special move is Black Death Cloud.