▁g ag ged ▁to ▁can n ib als , ▁and ▁the ▁Society ▁formed ▁years ▁later . ▁ ▁While ▁Captain ▁Marvel ▁is ▁emp ower ed ▁by ▁six ▁myth ological ▁and ▁Bib lic al ▁figures , ▁Ib ac ▁is ▁emp ower ed ▁by ▁four ▁of ▁the ▁most ▁evil ▁and ▁ter r ifying ▁men ▁to ▁have ▁ever ▁walked ▁the ▁earth : ▁Ivan ▁the ▁Ter rible , ▁who ▁supplies ▁T error , ▁Ces are ▁Borg ia , ▁who ▁gives ▁Ib ac ▁C unning , ▁Att ila ▁the ▁Hun , ▁who ▁g ifts ▁him ▁with ▁F ier cen ess , ▁and ▁Cal ig ula , ▁the ▁spons or ▁of ▁Cru el ty . ▁While ▁Captain ▁Marvel ▁transform s ▁using ▁magic ▁light ning ▁bol ts , ▁Ib ac ' s ▁transformations ▁are ▁accomplished ▁with ▁the ▁power ▁of ▁myst ical ▁green ▁fire ▁and ▁br im stone . ▁This ▁also ▁gives ▁him ▁super human ▁strength ▁and ▁stam ina . ▁In ▁his ▁second ▁appearance ▁in ▁Captain ▁Marvel ▁Advent ures ▁# 9 ▁Beaut ia ▁S iv ana ▁saying ▁' I b ac ' ▁next ▁to ▁Ib ac ▁after ▁his ▁transformation ▁transform s ▁her ▁into ▁a ▁black ▁ha ired ▁woman ▁we aring ▁a ▁black ▁dress , ▁though ▁she ▁still ▁has ▁her ▁own ▁person ality ▁and ▁turns ▁back ▁when ▁saying ▁' I b ac ' ▁again . ▁In ▁Justice ▁League ▁of ▁America ▁# 1 3 5 ▁( Oct ober ▁ 1 9 7 6 ) ▁Ib ac ▁is ▁one ▁of ▁the ▁villa ins ▁of ▁three ▁Earth s ▁working ▁for ▁King ▁K ull . ▁Sp y