From Destinypedia, the Destiny wiki
The Taken Incendior is a type of Taken Cabal that wields a Cabal Magma Launcher, which deals Solar damage like those wielded by their normal counterparts. At closer ranges, they can fire a single Void fireball that explodes on impact and creates a massive area of denial. Thus far, all Taken Incendiors encountered have been Ultras.
List of appearances