▁was ▁also ▁discussed ▁on ▁an ▁install ment ▁of ▁Rob ▁Paul sen ' s ▁T alk in ' ▁To ons ▁special ▁featuring ▁Cow ▁and ▁Ch icken ▁cre ator ▁David ▁Fe iss ▁and ▁voice ▁actor ▁Charlie ▁Ad ler ▁when ▁an ▁audience ▁member ▁asked ▁why ▁" B uff alo ▁G als " ▁only ▁a ired ▁once . ▁ ▁Awards ▁and ▁nomin ations ▁ ▁Other ▁media ▁The ▁two ▁main ▁characters , ▁Cow ▁and ▁Ch icken , ▁made ▁came o ▁appearances ▁as ▁al iens ▁in ▁Ben ▁ 1 0 : ▁Om ni verse . ▁They ▁were ▁the ▁second ▁Cart oon ▁Network ▁characters ▁to ▁make ▁came o ▁appearances ▁in ▁the ▁Ben ▁ 1 0 ▁franch ise , ▁Billy ▁from ▁The ▁Gr im ▁Advent ures ▁of ▁Billy ▁& ▁M andy ▁being ▁the ▁first . ▁Ad ler ▁repr ised ▁his ▁roles ▁for ▁the ▁came o . ▁ ▁Ch icken ▁made ▁a ▁came o ▁near ▁the ▁end ▁of ▁the ▁Cart oon ▁Planet ▁episode ▁" ▁Tom ▁F ool ery ". ▁ ▁Cow ▁makes ▁a ▁came o ▁in ▁the ▁beginning ▁of ▁The ▁Gr im ▁Advent ures ▁of ▁Billy ▁& ▁M andy ▁episode ▁" Her b ic idal ▁Man iac " ▁giving ▁General ▁Sk arr ▁fert il izer . ▁ ▁During ▁the ▁Mad ▁episode ▁" Once ▁Upon ▁a ▁To on ", ▁Cow ▁and ▁Ch icken ▁are ▁among ▁the ▁classic ▁cart oon ▁characters ▁reun ited ▁in ▁a ▁spo of ▁of ▁ABC ' s ▁Once ▁Upon ▁a ▁Time . ▁ ▁In ▁the ▁OK ▁K . O . ! ▁Let ' s ▁Be ▁Hero es ▁episode ▁" C