Original Finn
Character Information
Gender: Male
Species: Human
Age: 11-16
Friends: Jake, Princess Bubblegum, Marceline Abadeer
Relatives: Jake (adoptive brother), Martin (biological father) Joshua (adoptive father)†, Margaret (adoptive mother)†, Jermaine (adoptive brother), Stormo (shared DNA), Lady Rainicorn (adoptive sister-in-law), Charlie (adoptive niece), T.V. (adoptive nephew), Jake Jr. (adoptive niece), Kim Kil Whan (adoptive nephew), Viola (adoptive niece), Unnamed grandmother (adoptive grandmother) mentioned in "Ignition Point", Roselinen (wife in Pillow World),

Jay & Bonnie (son & daughter in Pillow World), Quilton (father-in-law in Pillow World), Shoko (incarnation), Erin (wife in "Food Chain"; non-canon), Kim Kil Whan's Wife (adoptive niece-in-law), Bronwyn (adoptive great-niece),

Occupation: Hero, Aventurer
First Appearance: Animated short (Pen) "Slumber Party Panic" (Finn)

Finn (full title: Finn the Human, or Finn Mertens, and formerly known as Pen in the original short), is the main protagonist of the series Adventure Time.


  • In the Cartoon Network Live Action Promo "What Time Is It?" Finn is portrayed by Christopher Kramme.
  • Finn has a fictional female counterpart: Fionna.
  • Finn's favorites have been stated throughout the series.
    • Finn's favorite color is baby blue "boy style," as revealed in "The Silent King."
    • Finn's favorite food is meatloaf, as stated in "Still" and later confirmed in "Jake Suit."
    • Finn's favorite song sounds like an alternative version of "Itsy Bitsy Spider."
  • Stormo is a creation partially made from Finn's DNA from the episode "Goliad."
  • Besides Tree Trunks' pies, Finn also likes Wildberry Princess's meat pies.
  • In "Dungeon Train," Jake says Finn is about 5' tall.
  • In "Dentist," it is revealed that he actually knows his full name given at birth, which is "Finn Mertens," not counting his alternate universe self in "Finn the Human."