Farmworld Finn

Finn Mertens is Finn from the Farmworld timeline who makes his first appearance in the episode "King Worm" and then in "The Lich". He makes his first major appearance in "Finn the Human".

Appearance
His appearance varies slightly from that of the Finn from Ooo. He has a robotic/mechanical arm fixed with tape, wears a brown sash-like garment (green in "King Worm") which appears to button to his pants. He has longer sleeves, long pants tattered at the ankles, has a backpack identical to normal Finn's but it is sometimes seen as dark green and one solid color. He also has quite a pronounced nose as well as much larger and pointier, slightly more detailed eyes (the eyes and nose also make a slight resemblance to Lemongrab) and lacks socks or shoes. His voice is identical to regular Finn.

Finn the Ice King
When he is possessed by the crown, he undergoes physical and psychological changes similar to those of Simon Petrikov: his eyes turn completely blue (he also gets bags under them) then turns normal for a while when he hears his baby brother cry (which means is fighting the crown's power and temporarily reclaims his sanity to protect his family, similar to what Simon does with Marceline). His hair appears long and wild (which allows him to fly). He also begins to go insane, only his insanity is quicker, since he allows the crown to take him over, in order to combat first the Destiny Gang, and then the bomb (Simon was an unwilling victim of the crown's power, while Finn deliberately wore it to gain the power of ice). His insanity is evidenced by the deranged monologues he gives about "ice and whispering snow" and about being "the hand of madness," as well as his megalomania and desire to freeze the world. He becomes very protective of the crown when he wears it, urging Jake to "back off my crown [...]! I warn you!"

Major appearances

 * "Finn the Human"
 * "Jake the Dog"

Minor appearances

 * "The Lich"
 * "King Worm"

Trivia

 * Farmworld Finn is seen playing a flute that regular Finn had played in the episode "Prisoners of Love." Finn tried to throw it at the Ice King but he had broken it when picking the lock to the sad ogre's heart.
 * Farmworld Finn looks similar to the Mirror Finn in the episode "King Worm." However, Mirror Finn has a strap that matches his bag while Farmworld Finn has a brown strap.
 * Farmworld Finn's robotic arm appears to be old, as it creaks when it is moved.