Sullust is a character featured in the introduction of Blood of the Chozo. One of the few living Chozo in any Metroid series media, Sullust is a "plebe" at Tranquility Base airfield just starting a Bounty Hunter apprenticeship. He is taunted and called "Mr. Adventure" by the other plebes, who are quickly burned when he is apprenticed to an unnamed woman Hunter who seems to be highly respected (unspecified but presumably Samus Aran). Shortly after learning of this, Samus crashes on the airfield.