Unstoppable Incendior

The Unstoppable Incendior is a Barant Cabal Incendior-class Unstoppable Champion. It presses its target relentlessly, firing magma bolts as it advances, and closes distance to use its Compression Blast, which burns and knocks targets back. It does not stagger unless a Guardian uses Anti-Unstoppable abilities, which briefly stagger it and open a window to deal damage.

Skydock IV

In Skydock IV, a Lost Sector in the European Dead Zone, the Legend version has three Unstoppable Incendiors and the Master version has five, each with one Barrier Colossus. Clear the minor enemies first, then stun the champion when it is alone. Guides suggest energy-slot weapons such as Epochal Integration or Zaouli's Bane for stuns. Guides are older, so check current modifiers before running it.