Susanoomon

Susanoomon is a Wizard Digimon whose name and design are derived from the mythological Susanoo. Told of in Oriental legends, it is the strongest destructive god and the god which governs over regeneration. It is told that when the Network System descends into chaos, it will erase the existing system, and create a new one. It wields the "ZERO-ARMS: Orochi", which emanates a gigantic sword of light.

Digimon World 4
Susanomon can be obtained with Agumon or Guilmon, you must do the "seal the ghost" extermination sidequest in very hard mode breaking a "Defence Rom Delta" in the cave. With Veemon or Dorumon you must do the "Card retrive" sidequest in very hard mode with only 1 hp of life without recovering hp or using a gate disk. This is commonly done by falling into a quicksand pit right before the boss (dropping you to 1 HP) and then beating it without getting hit or healing.

Digimon World DS
Susanoomon appears as an NPC in the Tamer Battle Arena when you are a Platinum Tamer.

Digimon World Dawn and Dusk
A Susanoomon loiters in the Coliseum lobby, and another stands around on the Union Bridge.

Susanoomon can DNA digivolve from Kongoumon and Yatagaramon, or Magnamon and SuperStarmon, if the base Digimon is at least level 73, with 460 Spirit and 88888 species experience. Susanoomon can DNA digivolve to Chronomon Holy Mode with Varodurumon.

Attacks
 * Celestial Blade (天羽々斬) : Slices and stabs everything in the world with the ZERO-ARMS: Orochi.
 * Heaven's Thunder (八雷神) : Points the ZERO-ARMS: Orochi at the heavens, which then rain incessant bolts of lightning upon the ground.
 * ZERO-ARMS: Orochi