Turtle Prince is a character who appears in "The Prince Who Wanted Everything" and is the gender-swapped version of Turtle Princess. He was taken captive by forest animals for Lumpy Space Prince along with Flame Prince, Marshall Lee, and Prince Gumball. He, like all other gender-bent characters, is imaginary.
Turtle Prince has hair in different style, but about the same length, as his female counterpart. His hair is also shinier compared to Turtle's Princess. He wears a white headband with a small green gem in the middle.
Similar to Turtle Princess, he is protective of making sure the books in the library are in good conditions and avoid being burn by Flame Prince. He seems to be good friends toward Flame Prince for he suggested to read a book for him, showing his care.