皮杰 transliterates the English initials/nickname "P.J." —
皮 (pí) approximates 'P' and
杰 (jié) approximates 'J'. The same characters reappear in many subtitle dubs whenever a Western character is called P.J. (e.g. Goofy's son P.J. in Disney's A Goofy Movie / Goof Troop, where
皮杰 is the standard Chinese rendering).
