ime ▁series , ▁Ps y du ck ' s ▁appearances ▁became ▁a ▁running ▁g ag ; ▁M ist y ▁would ▁often ▁release ▁Ps y du ck ▁by ▁accident ▁instead ▁of ▁the ▁Pok ém on ▁she ▁wanted ▁to ▁use . ▁ ▁Design ▁and ▁characteristics ▁Ps y du ck ▁was ▁one ▁of ▁ 1 5 1 ▁different ▁designs ▁conce ived ▁by ▁Game ▁Fre ak ' s ▁character ▁development ▁team ▁and ▁final ized ▁by ▁Ken ▁Sug im ori ▁for ▁the ▁first ▁generation ▁of ▁P ocket ▁Mon sters ▁games ▁Red ▁and ▁Green , ▁which ▁were ▁local ized ▁outside ▁Japan ▁as ▁Pok ém on ▁Red ▁and ▁Blue . ▁Origin ally ▁called ▁" K od uck " ▁in ▁Japanese , ▁N intendo ▁decided ▁to ▁give ▁the ▁various ▁Pok ém on ▁species ▁" cle ver ▁and ▁descript ive ▁names " ▁related ▁to ▁their ▁appearance ▁or ▁features ▁when ▁transl ating ▁the ▁game ▁for ▁western ▁aud ien ces ▁as ▁a ▁means ▁to ▁make ▁the ▁characters ▁more ▁rel atable ▁to ▁American ▁children . ▁As ▁a ▁result , ▁they ▁were ▁renamed ▁" P s y du ck ", ▁a ▁combination ▁of ▁the ▁words ▁" ps ych ic " ▁and ▁" du ck ". ▁ ▁Kn own ▁as ▁the ▁D uck ▁Pok ém on , ▁Ps y du ck ▁res emb les ▁a ▁yellow ▁plat yp us ▁with ▁a ▁vac ant ▁st are . ▁It ▁has ▁a ▁small ▁tu ft ▁of ▁black ▁hair ▁at ▁the ▁top ▁of ▁its ▁head . ▁It ▁wal ks ▁on ▁its ▁h ind ▁legs , ▁and ▁has ▁arms ▁rather ▁than ▁wings