Rhombus Rhombus is the head paladin of the Lost Hills chapter of the Brotherhood of Steel in 2161 and became high elder after the death of John Maxson . Background . Before 2161 , he became the new head paladin when the previous one , John Maxson , became the new high elder after his father is killed by the Vipers . The paladins , now led by Rhombus , begin a full - scale campaign against the Vipers , tracking them down and wiping out almost all of their members within the span of a month . Gruff , stern and stoic , he does not tolerate nonsense . He is not one for conversations and if upset , will kick the Vault Dweller out of the Brotherhood of Steel . He promises to train the Vault Dweller once the super mutant threat is removed . After the death of John Maxson , Rhombus becomes the new high elder . Texas . Before 2208 , Rhombus created a splinter faction of the Brotherhood of Steel , despite some criticism from the elder council because of the former expedition grown by similar ambitions ( to track down and assess the extent of the remaining super mutant threat ) and the ensuing incident that divided the Brotherhood . He then starts a crusade against the largest faction of super mutants currently existing in the west , the Attis Army . With some scribes and paladins , he mounted a new expedition which was later named the " Texas Expedition " and began tracking Attis ' Army . They followed the army ' s trail to Texas and there , he discovered the vault prototype , an abandoned vault prototype dedicated to the Secret Vault project and installed themselves as the main base of the Brotherhood of Steel in Texas . In 2208 , , the raider matron and their contact in the town of Carbon , reported movement of super mutants , and therefore Rhombus decided to go to Carbon with a group of paladins . Her information indicated their next destination , the ghoul city of Los . Here , Rhombus ends up being alone , captured , with all his comrades being killed in a bloody battle with super mutants and a local ghoul cult known as the Church of the Lost , but he managed to steal a keycard of the Secret Vault , the final destination of the Attis army and hid it under a truck . Rhombus is tortured by the cult leader , , but later liberated by the Initiate . Afterward , Rhombus assisted the Initiate in getting to the truck where he had hidden the keycard . Once at the destination however , he is blown up by a ghoul suicide bomber . Unable to continue fighting , he gives the Initiate the keycard and entrusts him with the task of stopping Attis ' army and finding the Secret Vault entrance . Rhombus is left sitting near the truck , wounded . However , if the Initiate returns to the place later , Rhombus is nowhere to be seen . His fate is unknown . Interactions with the player character . Playable character . He is also a playable character in " " after completing Chapter Two . He is very similar to Cyrus , though he has some extra advantages . Inventory . Fallout Fallout : Brotherhood of Steel Appearances . Rhombus appears in " Fallout " as a talking head voiced by Clarence Brown . He also is an PC / NPC in " " . He appears during the second chapter in the Church of the Lost torture chamber , where he and the Initiate mutually benefit one another . He becomes available to be controlled as a playable character in the third chapter . The latter Rhombus is voiced by John Vernon .