Basilius the Golem

Basilius the Golem was a Red Legion Cabal Colossus stationed on Mars who sought to augment himself and become the first of his battalion to be a Cabal Exo. The Guardian challenges him to a Rite of Proving (Rite of Proving) in Battleground: Hailstone to stop him finding the Deep Stone Crypt. At each third of his health he becomes immune and summons a Major Shield Bearer that must be killed.