▁character ▁in ▁the ▁Italian ▁horror ▁com ics ▁series ▁D yl an ▁Dog , ▁is ▁a ▁Gr ou cho ▁Marx ▁imp erson ator ▁whose ▁character ▁became ▁his ▁permanent ▁person ality , ▁and ▁he ▁works ▁with ▁D yl an ▁Dog ▁as ▁his ▁professional ▁side k ick . ▁In ▁the ▁English - language ▁version , ▁to ▁avoid ▁legal ▁comp lications ▁regarding ▁Gr ou cho ▁Marx ' s ▁estate , ▁the ▁art ▁was ▁alter ed ▁so ▁that ▁Gr ou cho ▁no ▁longer ▁sports ▁the ▁Marx ▁brother ' s ▁signature ▁m oust ache , ▁and ▁was ▁renamed ▁Felix . ▁ ▁Film ography ▁ ▁Fe atures ▁ ▁Short ▁subjects ▁Hollywood ▁on ▁Par ade ▁No . ▁ 1 1 ▁( 1 9 3 3 ) ▁Screen ▁S nap sh ots ▁Series ▁ 1 6 , ▁No . ▁ 3 ▁( 1 9 3 6 ) ▁Sunday ▁Night ▁at ▁the ▁Tro c ad ero ▁( 1 9 3 7 ) ▁Screen ▁S nap sh ots : ▁The ▁Great ▁Al ▁J ol son ▁( 1 9 5 5 ) ▁Show down ▁at ▁Ul cer ▁Gul ch ▁( 1 9 5 6 ) ▁( voice ) ▁Screen ▁S nap sh ots : ▁Play time ▁in ▁Hollywood ▁( 1 9 5 6 ) ▁ ▁Bibli ography ▁ ▁Books ▁by ▁Gr ou cho ▁Marx ▁B eds ▁( F arr ar ▁& ▁R ine hart , ▁ 1 9 3 0 ) ▁B eds : ▁re vised ▁& ▁updated ▁edition ▁( Bob bs - M err ill , ▁ 1 9 7 6 ▁) ▁Many ▁Happy