lying , ▁which ▁is ▁an ▁aspect ▁he ▁wanted ▁to ▁explore . ▁The ▁sequence ▁with ▁Jud ith , ▁the ▁woman ▁in ▁the ▁portrait ▁whose ▁form ▁It ▁assumes ▁to ▁ter r ify ▁Stan , ▁was ▁based ▁on ▁Mus chi etti ' s ▁experience ▁with ▁the ▁paint ings ▁of ▁Am ede o ▁Mod igli ani , ▁one ▁of ▁which ▁hung ▁in ▁Mus chi etti ' s ▁child hood ▁home , ▁and ▁which ▁he ▁found ▁fright ening , ▁interpre ting ▁Mod igli ani ' s ▁st yl isation ▁as ▁mon str ous . ▁ ▁Sk ars g år d ▁spoke ▁of ▁He ath ▁Led ger ▁as ▁being ▁an ▁insp iration , ▁while ▁contrast ing ▁between ▁Led ger ' s ▁J oker ▁and ▁his ▁Pen ny wise , ▁in ▁which ▁he ▁stated : ▁" I ▁think ▁the ▁biggest ▁difference ▁between ▁Pen ny wise ▁and ▁the ▁J oker ▁character ▁or ▁at ▁least ▁He ath ▁Led ger ’ s ▁interpretation ▁is ▁that ▁he ' s ▁far ▁more ▁based ▁in ▁reality ." ▁He ▁also ▁sought ▁to ▁not ▁attempt ▁to ▁em ulate ▁the ▁performance ▁in ▁The ▁Dark ▁Knight ▁( 2 0 0 8 ), ▁he ▁remarked : ▁" I ▁deliber ately ▁tried ▁to ▁make ▁mine ▁different ▁because ▁it ’ s ▁such ▁a ▁clear , ▁icon ic ▁performance ▁so ▁I ▁wanted ▁to ▁st ray ▁away ▁from ▁it ▁as ▁far ▁as ▁possible ." ▁Sk ars g år d ▁studied ▁animal ▁programs ▁to ▁assist ▁him ▁in ▁developing ▁Pen ny wise ' s ▁physical ▁behavior , ▁in ▁which ▁he ▁zero ed ▁in ▁on ▁the ▁energy ▁of