Stormo

Stormo is a character who appeared in "Goliad." Stormo is the brother of Goliad, and is made out of Finn's DNA, making Stormo Finn's "son." He is used to keep Goliad in a mental battle for eternal life. Stormo bears resemblance to a griffin, a mythological creature. Both are quadripeds and have bird-like heads, the only difference being Stormo lacks wings and has long, blonde hair, resembling Finn's as they share DNA.

Trivia

 * Because a strand of Finn's hair was used in his creation, long blond hair is prominent on him.
 * Stormo is half candy and half human and he is the second candy-human hybrid in the series, the first being Princess Bubblegum.
 * Because Princess Bubblegum is his creator and estentially his "mother' and Finn is his "Father" technically Finn and Princess Bubblegum have a son together.
 * Technically Jake is his uncle and all of his and Finn's family would also be his relatives.
 * Since Princess Bubblegum created them the same way and both were created by her Lemongrab is also his brother.
 * Neptr could also be considered his brother because Finn created him but they don't share any real genetics.