▁for ▁an ▁extended ▁period ▁of ▁time , ▁Stewart ▁served ▁as ▁the ▁regular ▁Lan tern , ▁coming ▁into ▁his ▁own ▁as ▁he ▁batt led ▁numerous ▁Green ▁Lan tern ▁villa ins ▁and ▁played ▁a ▁key ▁role ▁during ▁the ▁Cris is ▁on ▁In finite ▁Earth s . ▁During ▁that ▁time ▁the ▁Guard ians ▁of ▁the ▁Un iverse ▁assigned ▁Kat ma ▁T ui ▁to ▁train ▁Stewart , ▁and ▁the ▁two ▁developed ▁rom antic ▁feelings ▁for ▁each ▁other . ▁They ▁married , ▁but ▁Kat ma ▁was ▁soon ▁murder ed ▁by ▁long time ▁Green ▁Lan tern ▁villa in ▁Star ▁S app hire . ▁Stewart ▁was ▁cr ushed ▁by ▁this , ▁and ▁his ▁life ▁began ▁to ▁un ra vel . ▁He ▁reached ▁his ▁lowest ▁point ▁when ▁he ▁failed ▁to ▁save ▁the ▁planet ▁X ans hi ▁from ▁destruction ▁during ▁the ▁Cos mic ▁Od ys sey . ▁ ▁John ▁Stewart ▁re de emed ▁himself ▁during ▁the ▁M osa ic ▁crisis , ▁when ▁an ▁ins ane ▁Guardian ▁ab duct ed ▁cities ▁from ▁all ▁over ▁the ▁universe ▁and ▁placed ▁them ▁together ▁on ▁O a . ▁When ▁the ▁Guardian ▁was ▁defeated , ▁the ▁cities ▁remained , ▁as ▁the ▁other ▁Guard ians ▁claimed ▁to ▁not ▁have ▁enough ▁energy ▁in ▁the ▁Central ▁Power ▁B atter y ▁to ▁send ▁them ▁home . ▁While ▁they ▁gathered ▁the ▁resources , ▁John ▁Stewart ▁was ▁assigned ▁to ▁over see ▁the ▁jam med ▁together ▁communities . ▁Using ▁his ▁intellect ▁and ▁un con vent ional ▁thinking , ▁he ▁formed ▁the ▁war ring ▁communities ▁into ▁a ▁coh es ive ▁society . ▁He ▁was ▁a ided