Lumpy Space Prince

The Lumpy Space Prince is the gender-swapped version of Lumpy Space Princess. He appeared in the season three episode "Fionna and Cake." He was only shown drinking something from a light-blue cup. Because so little of him is seen, his similarities with Lumpy Space Princess are currently unknown.

Appearance
Lumpy Space Prince is identical to Lumpy Space Princess, except with a mustache and a darker shade of purple, but the darker shade is most likely because of the lighting of the scene he appeared in.

Trivia

 * Not counting a technicality with Neptr, the only princes shown in the series are Lumpy Space Prince, Prince Gumball, and Prince Huge. Dr. Prince appears for the first time in season five's "Bad Little Boy."