|Name in Japanese||スピリタス|
|Affiliation||ISDA, Lindworm Unit|
Spirytus (スピリタス Supiritasu) is Keiichi Amagi's Dragon partner. When Amagi becomes unstable, he goes mad, causing him to eat Amagi while in his Dragon form, and is thus reluctantly killed by Howlingstar. Before losing complete control, Spirytus had begun to feed on humans in his semi-transformed state and was revealed to be the so-called serial killer plaguing the city.
Because of Spirytus's madness, Jin meets Toa, starting a bond between the two.