Lemongrab is a psychotic lemon person who rules the Earldom of Lemongrab. Created by Princess Bubblegum to serve as her heir, but the experiment gone wrong. He seems to suffer from many mental and emotional issues, and overreacts to small problems in the manner of an angry and obstreperous child. He hysterically screams at others almost every time he finds something "unacceptable". Since the episode "Too Old" he exhibits a more extreme and cruel personality, adding that he became obese and more gluttonous. He even went to the extremes of becoming a cannibal and ate his own brother/clone because he disobeyed him.