Monkey's energetic, ambitious, and excitable temperament causes him numerous difficulties, and he often quarrels with Pigsy or talks back to the master and storms off in a huff.
唐僧能哭善泣，行者善道能言老孫好名、好勝、急躁、捉狹…… 的個性，在取經途中仍然不斷為他帶來麻煩。逢到唐僧「聒絮」，他也不時要拿師弟老豬出氣，與師父隨口頂撞，甚或一走了之，到龍宮品茗、向觀音訴苦。