▁place . ▁When ▁a ▁Ge oman cer ▁has ▁reached ▁the ▁end ▁of ▁their ▁life - cycle ▁their ▁power ▁is ▁removed ▁by ▁a ▁suic ide ▁rit ual ▁called ▁Bag h - N akh . ▁ ▁Ge oman cers ▁were ▁instrument al ▁in ▁many ▁p iv otal ▁events ▁in ▁the ▁V ali ant ▁Un iverse , ▁including ▁the ▁Unity ▁Conf lict , ▁the ▁birth ▁and ▁up br ing ing ▁of ▁Magn us , ▁Rob ot ▁F ighter , ▁the ▁struggle ▁against ▁the ▁Dar que ▁Power ▁and ▁the ▁Har b inger ▁Wars . ▁Gil ad ▁An ni - P add a ▁served ▁as ▁the ▁" F ist ▁and ▁Ste el " ▁of ▁the ▁Ge oman cers ▁for ▁most ▁of ▁his ▁life , ▁failing ▁three ▁times ▁to ▁save ▁a ▁Ge oman cer . ▁ ▁In ▁ 1 9 9 2 , ▁Ge oman cer ▁T ashi ▁K hat un ▁author ed ▁a ▁book ▁entitled ▁The ▁Book ▁of ▁Ge oman cer , ▁the ▁t ome ▁of ▁ult imate ▁knowledge . ▁ ▁The ▁first ▁Ge oman cer ▁was ▁Khan it , ▁who ▁was ▁chosen ▁in ▁ 3 5 0 0 ▁BC . ▁Later ▁Ge oman cers ▁included ▁Buck ▁Mc Hen ry , ▁Geoff ▁Mc Hen ry , ▁Luc inda ▁M ende z , ▁Y uri ▁Pier ce , ▁Ana ▁K aw ain ui , ▁R ok land ▁T ate ▁and ▁Ar am ▁An ni - P add a . ▁ ▁In ▁the ▁second ▁V ali ant ▁continu ity , ▁Kay ▁Mc Hen ry ▁serves ▁as ▁the ▁Ge oman cer