|This article is about Farmworld Finn's father. You may be looking for Finn's biological father from the primary timeline, or Finn's adoptive father, Joshua.|
Farmworld Martin (real name: Martin Mertens), referred to as Finn's dad, is an alternate version of Finn's biological father who appears in the episodes "Finn the Human", "Jake the Dog", and "Crossover".
Farmworld Martin appears to be a normal human being with peach-colored skin. He wears torn up blue jumpers, an old long-sleeved red shirt, and an old pair of black boots. He has a bald head with one curly hair on the top and a shaggy light brown beard which covers his mouth and loops behind his ears, similar to the Martin of the primary timeline. He also appears to have a slightly muscular upper body, and is much thinner than the main timeline's Martin.
- "Finn the Human" (debut)
- He was involved with the Destiny Gang somehow, which is why his wife told Finn to sell Bartram to pay them.
- He is one of the few characters in Farmworld to be named.