Shakkoumon

Shakkoumon is a Mutant Digimon whose name and design are derived from the mythical Shakōkidogū. It DNA digivolved from Armadillomon and Angemon. It possesses white wings on its shining, silver body, and according to one theory it is an Angel Digimon which descended to the ancient Digital World. It can rotate its neck and torso 360°, allowing it to attack in every direction. As its face is expressionless it is difficult to determine what it's thinking, so some observers find it eerie, but its personality is exceedingly gentle.

Digimon Adventure 02: Tag Tamers
There is a DNA Digivolving hint that says that an Ankylomon and Angemon will make a Shakkoumon or a MagnaAngemon.

Shakkoumon digivolves from Ankylomon to Vikemon in line 20.

Digimon Tamers: Brave Tamer
The Shakkoumon card, titled "Nigimitama", is a Rank 4 card which teaches a Digimon the Nigimitama technique. Nigimitama reduces one random enemy's HP and PP.

Digimon World Dawn/Dusk
Shakkoumon is in a mission for the Light Fang. It can also be obtained by DNA digivolving Angemon + Ankylomon (Lv36+, Machine EXP4500+, Defense 255+). Many can be found in Task Canyon.

Digimon World 3
Shakkoumon can be found in Amaterasu's West Sector, in North Badland (East), controlling the Gym nearby. He is also available as a Brown Ultimate Card with 32/34.

Attacks
 * Justice Beam/Harmonious Spirit (荒御魂): Radiates red laser beams from its eyes that can reach 100000° at their focal point.
 * Kachina Bombs/Clay Bomb (和御魂): Fires clay disks from its waist.