Ash Crimson represent a group older than the Orochi. He seeks the power of the Three Sacred Treasures.
The story begins with Ash Crimson standing in the middle of the road leading to South Town. As a tanker truck approaches Ash lights up his green flame and ignites the truck, starting the blaze in South Town. Kyo Kusanagi, on Ash's trail, follows the arsonist until a chance encounter with Alba Meira leads to a case of mistaken identity. Alba believes Kyo to be the cause of the fires in South Town, a fact Kyo does not immediately deny. Alba and Kyo begin to fight with Ash looking on in amusement.
However Ash's amusement is short lived as Iori Yagami has finally caught up to him (after being delayed in episode 1). Ash ignores Iori however as he has already stolen his power so Iori is of no use to him. Ash vanishes so Iori decides to stop Kyo and Alba from fighting. Alba apologizes to Kyo and everyone departs. The Ikkari Warriors confront Kyo to see if he is real or a clone and Kyo lights up his fire challenging them to find out.
Ash is seen leaving on a boat with Elisabeth Blanctorche.
Ash fights using an acrobatic style combined with fire abilities to give a graceful fighting style. It has several moves similar to Savate (French Kickboxing). Ash, like the other protagonists in the King of Fighters Series, is a pyrokinetic.