▁I rene ' s ▁love . ▁Mur ug ad oss ▁plays ▁Kar upp u ' s ▁friend ▁O ole ▁while ▁N aren ▁appears ▁as ▁R ath nas amy ▁who ▁is ▁also ▁Pet ta ik aran ' s ▁rival ▁in ▁co ck f ight ing . ▁ ▁Princi pal ▁phot ography ▁began ▁in ▁Mad ur ai ▁in ▁February ▁ 2 0 0 9 ▁with ▁scenes ▁featuring ▁D han ush ▁being ▁shot . ▁The ▁first ▁look ▁of ▁the ▁film ▁was ▁released ▁shortly ▁after ▁the ▁comm enc ement ▁of ▁film ing . ▁It ▁featured ▁a ▁series ▁of ▁prom ot ional ▁post ers ▁dep ict ing ▁the ▁characters ▁played ▁by ▁D han ush , ▁Jay ap al an ▁and ▁K ish ore . ▁During ▁early ▁stages ▁of ▁production , ▁D han ush ▁revealed ▁he ▁would ▁play ▁the ▁role ▁of ▁a ▁local ▁co ck fig h ter ▁named ▁K . ▁P . ▁Kar upp u , ▁and ▁described ▁the ▁vent ure ▁as ▁his ▁" d ream ▁project ". ▁The ▁co ck f ight ▁sequences ▁that ▁take ▁place ▁before ▁inter mission ▁was ▁fil med ▁for ▁ 2 6   days ▁in ▁a ▁set ▁created ▁by ▁art ▁director ▁Jack i . ▁Fil ming ▁was ▁completed ▁in ▁August ▁ 2 0 1 0 . ▁In ▁addition ▁to ▁being ▁shot ▁in ▁Mad ur ai , ▁some ▁port ions ▁were ▁also ▁fil med ▁in ▁Th ir up ar ank und ram . ▁The ▁co ck f ights ▁were ▁fil med ▁using ▁Computer - generated ▁imag ery ▁( CG I ). ▁The ▁post -