Grimmon

Grimmon
Grimmon is an unobtainable boss Digimon appears in the games Digimon World Dawn and Digimon World Dusk.

Digimon World Dawn and Dusk
Grimmon first appeared as a hooded figure in the Thriller Ruins, spotted by Night Claw as they investigated an outbreak of violence in local Digimon. The figure later appeared after the Normal Tamer Tournament, and was chased back to CITY, where it was revealed as an egg-shaped purple "Mystic Energy" Known as "BigHead" who attacked CITY and caused all of the Digimon to revert to their In-Training level, except for the player's Digimon and NaviDigimon, the Team Leader, and Bokomon and Neemon (who even comment how odd it is that they didn't degenerate). The player defeats the Mystic Energy inside of their respective headquarters, which then flees. The "Mystic Energy" is encountered again in Limit Valley, where it displays the power to control Digimon (Seasarmon and SandYanmamon in particular), which it uses to attack the protagonist before finally revealing itself as Grimmon.

After being defeated once more, Grimmon shows up at Access Glacier, where it has the protagonist's Chief, the Chief's partner, and his/her friends under its control (Chief Glare and Ophanimon in Dawn and Chief Julia and ChaosGallantmon in Dusk), using his ChronoDSR ability. When the technique fails to work on the protagonist, it sends the Chief's partner at him/her before fleeing.

It appears once last time in Chaos Brain, where the Chrono Core fuses with it to become ChaosGrimmon

Attacks Attacks in Digimon World: Dawn and Dusk As Mystic Energy
 * Call Cat: Earth Elemental
 * Call Bat: Dark Elemental
 * Dark Crusher: Dark Elemental, Paralyze

As Grimmon
 * Power Cutter: (xx00x), Selectable, Steel/Earth Elemental?
 * Call Bird: (x0x0x), Selectable, Wind Elemental
 * Black Blast: (xx0xx), Selectable, Dark Elemental, Resist Dark Down
 * Call Dragonfly: (xx00x), Selectable, Thunder Elemental, Stun
 * AT Change: Self, Changes strengths and weaknesses

ChaosGrimmon
ChaosGrimmon is an unobtainable boss Digimon appears in the games Digimon World Dawn and Digimon World Dusk.

Digimon World Dawn and Dusk
ChaosGrimmon is the form that Grimmon obtains while in Chaos Brain, when it merges with the Chrono Core. It retains the red and blue color of Chronomon Destroyer Mode. After being defeated, the Grimmon side of the fusion seems to gain control of the Digimon, causing it to Digivolve to ExoGrimmon

Attacks Attacks in Digimon World Dawn and Dusk
 * Chaos Slash: (xx00x), Selectable, Dark Elemental?, Confusion
 * Multi Gatling: (xx0xx), Selectable, Fire Elemental, 4x Hits
 * Call Leyner:
 * Call Machines
 * AT Change: Self, Changes strengths and weaknesses.

ExoGrimmon
ExoGrimmon is an unobtainable boss Digimon appears in the games Digimon World Dawn and Digimon World Dusk.

Digimon World Dawn and Dusk
ExoGrimmon is the form,ChaosGrimmon takes on after the Grimmon side of it overpowers the Chrono Core side. After being defeated, the Digimon disappears, leaving only a lamenting Chrono Core behind, who soon vanishes as well.

Attacks Attacks in Digimon World Dawn and Dusk
 * ChronoDSR: (00000), Fixed, Dark Elemental?, Sleep
 * Prominence: (x0x0x), Selectable, Fire Elemental, Defense Down, 2x Hits
 * Moon Tears: (x000x), Selectable?, Recovers HP.
 * Air God (Call Air God): (x000x) or (00000), Fixed, Thunder/Light Elemental?, Attack Down
 * Death God (Call Death God): (00x00), Fixed, Dark Elemental?, Spirit Down
 * AT Change: Self, Changes strengths and weaknesses.