ain . ▁ ▁Produ cers ▁Bill ▁Oak ley ▁and ▁Josh ▁Wein stein ▁were ▁excited ▁about ▁the ▁episode ▁because ▁Princi pal ▁Sk inner ▁was ▁one ▁of ▁their ▁favorite ▁characters . ▁The ▁pair ▁had ▁already ▁written ▁the ▁season ▁five ▁episode ▁" S weet ▁Se ym our ▁Sk inner ' s ▁Ba ad ass ss s ▁Song ", ▁which ▁was ▁an ▁in - depth ▁study ▁of ▁the ▁character . ▁Oak ley ▁said ▁he ▁and ▁Wein stein ▁" sp ent ▁a ▁month ▁imm ers ed ▁in ▁the ▁mind ▁of ▁Se ym our ▁Sk inner " ▁to ▁prepare ▁that ▁episode , ▁and ▁from ▁that ▁point ▁forward , ▁took ▁every ▁opportunity ▁to ▁" t ink er ▁with ▁[ Sk inner ' s ] ▁person ality ▁and ▁his ▁back story ▁and ▁his ▁hom el ife ". ▁ ▁Descri bing ▁the ▁real ▁Se ym our ▁Sk inner , ▁Ke eler ▁remarked , ▁" It ▁would ▁have ▁been ▁easy ▁to ▁make ▁him ▁a ▁really ▁hor rible , ▁nast y , ▁dis like able ▁gu y , ▁but ▁we ▁didn ' t ▁do ▁that . ▁We ▁made ▁him ▁just ▁not ▁quite ▁right , ▁not ▁quite ▁Sk inner , ▁and ▁a ▁little ▁bit ▁off ." ▁Bill ▁Oak ley ▁said ▁the ▁idea ▁behind ▁the ▁character ▁was ▁that ▁he ▁" just ▁lack ed ▁p izz azz ". ▁The ▁produ cers ▁selected ▁Martin ▁She en ▁to ▁voice ▁the ▁character ▁because ▁they ▁adm ired ▁his ▁performance ▁in ▁Ap ocal yp se ▁Now ▁and ▁felt ▁his ▁voice ▁would ▁be ▁appropriate ▁for ▁a ▁Vietnam ▁veter an . ▁ ▁Ke eler