8.1
/10
Martin Mertens is a fictional character portrayed by Stephen Root in the TV series Adventure Time: Fionna and Cake.
In the first episode they appeared in, titled The Star (season 1), they were 71 years old.
They appear in 1 episodes out of a total of 10 aired so far

Martin Mertens

by Stephen Root

character

Episodes1

  • 8.9
    /10

    The Star
    episode S1.E7 september 2023
    Cake is recruited by a band of skilled vampire hunters. Gary and Marshall Lee attend a black-tie party.