ing ▁his ▁sector , ▁but ▁on ▁pres erving ▁order ▁in ▁the ▁society ▁of ▁his ▁home ▁planet ▁no ▁matter ▁what ▁the ▁cost . ▁Event ually , ▁he ▁concluded ▁that ▁the ▁best ▁way ▁to ▁accomplish ▁this ▁was ▁to ▁conquer ▁Kor ug ar ▁and ▁rule ▁the ▁planet ▁as ▁a ▁dict ator . ▁Ex posed ▁by ▁Hal ▁Jordan ▁and ▁pun ished , ▁he ▁later ▁w ield ed ▁a ▁yellow ▁ring ▁of ▁fear ▁from ▁Q ward . ▁Later ▁in ▁league ▁with ▁Par alla x , ▁he ▁would ▁establish ▁the ▁Sin estro ▁Corps , ▁which ▁began ▁the ▁War ▁of ▁Light . ▁Following ▁Black est ▁Night ▁and ▁War ▁of ▁the ▁Green ▁Lan tern s ▁Sin estro ▁would ▁once ▁again ▁receive ▁a ▁Green ▁Lan tern ▁ring ▁and ▁tempor arily ▁head line ▁the ▁month ly ▁Green ▁Lan tern ▁following ▁The ▁New ▁ 5 2 . ▁In ▁Scott ▁S ny ders ▁Justice ▁League ▁it ▁was ▁revealed ▁that ▁Sin estro ▁was ▁searching ▁for ▁the ▁entity , ▁Um bra x , ▁which ▁is ▁one ▁of ▁the ▁seven ▁hidden ▁forces ▁of ▁the ▁universe . ▁Um bra x ▁represents ▁the ▁un seen ▁emot ions ▁of ▁the ▁Ult rav io let ▁Lan tern ▁Corps . ▁Sin estro ▁finally ▁disco vers ▁this ▁force ▁and ▁creates ▁and ▁army ▁of ▁Ult rav io let ▁lan tern s ▁including ▁John ▁Stewart ▁( wh om ▁later ▁gets ▁fre ed .) ▁ ▁J edia h ▁Ca ul ▁Premier ing ▁in ▁Green ▁Lan tern : ▁New ▁Guard ians ▁Ann ual ▁# 1 , ▁Ca ul ▁is ▁a ▁deep ▁under cover ▁Green ▁Lan tern ▁oper ative