|“|| Focus your anger. A great rage stirs within you, clawing to get out. You MUST release it. Or a puppet you'll remain.|
It is easily War's most destructive ability. When War's Chaos meter is full, he can unleash his powerful Chaos Form. When War is in Chaos Form he is invulnerable and inflicts massive damage; even a Trauma will die in five strikes. Besides an extra durable enemy like The Chosen, there is no one who can survive a meeting with War's Chaos form. While in Chaos Form War's chaos gauge will drain rapidly, the gauge will refill while destroying enemies, however Chaoseater will fill it up at the highest rate. The Legendary Enhancement War's Glory drastically increases the amount of time War remains in Chaos Form for, as well as the rate at which the Chaos Gauge is filled. Interestingly, the game's final boss will return War to normal form should he activate Chaos Form during the battle, making the form useless for that battle.
War unleashes this power during the Apocalypse in the game's prologue while battling a Trauma. Angels flying overhead instantly recognizing the fiery entity below them. When the Tormented Gate rises to retreat a horn sounding can be heard, a similar to that of an Earthcaller. All at once, War is drained of his power, unable to sustain his Chaos Form. Later after killing Tiamat, Samael tells him to tap into his inner rage by striking down The Watcher, giving him back his Chaos Form.
- Even though it is categorized in the game as a passive ability it is a very special passive ability. It can't be used at any time since it needs the Chaos level completely full, and is temporary once activated.
- War's chaos form looks similar to the Balrog from the Lord of the Rings.
- Death has an analogous form in Darksiders II - Reaper Form.