s ▁Drag o ▁out ▁with ▁seconds ▁left ▁in ▁the ▁final ▁round . ▁ ▁Rock y ▁V ▁( 1 9 9 0 ) ▁ ▁In ▁the ▁after math ▁of ▁his ▁fight ▁with ▁Ivan ▁Drag o , ▁Rock y ▁Bal boa ▁is ▁diagn osed ▁with ▁brain ▁damage ▁and ▁is ▁forced ▁to ▁ret ire ▁from ▁the ▁ring . ▁Additionally , ▁the ▁Bal boa ▁fortune ▁is ▁all ▁gone ▁due ▁to ▁an ▁un sc rup ul ous ▁account ant . ▁Rock y ' s ▁family ▁returns ▁to ▁their ▁old ▁neighborhood ▁and ▁Ad rian ▁returns ▁to ▁the ▁pet ▁store ▁she ▁used ▁to ▁work ▁at , ▁while ▁( in ▁a ▁sub plot ) ▁Rock y ▁( Ro bert ) ▁Jr . ▁( play ed ▁by ▁Syl v ester ▁St all one ' s ▁real ▁son ▁S age ) ▁de als ▁with ▁bul lying ▁at ▁his ▁school ▁and ▁Rock y ▁re - opens ▁Mic key ' s ▁old ▁g ym . ▁While ▁training ▁other ▁box ers , ▁Rock y ▁meets ▁a ▁young , ▁hun gry ▁box er ▁named ▁Tommy ▁G unn ▁( play ed ▁by ▁real - life ▁f ighter ▁Tommy ▁Mor r ison ) ▁and ▁begins ▁training ▁him ▁which ▁results ▁in ▁a ▁stra ined ▁relationship ▁with ▁Robert . ▁Unfortunately , ▁as ▁Tommy ▁begins ▁his ▁rise ▁to ▁fame ▁under ▁Rock y ' s ▁wing , ▁a ▁sle azy ▁fight ▁prom oter ▁named ▁George ▁Washington ▁Duke ▁convin ces ▁Tommy ▁that ▁Rock y ▁is ▁holding ▁him ▁back ▁and ▁Tommy ▁leaves ▁Rock y ▁for ▁Duke . ▁After ▁Tommy ▁wins ▁the ▁heavy weight ▁title ,