Character
Spirit Dream Warrior
Spirit Dream Warrior in Adventure Time: Fionna and Cake (2023), played by Matthew Broderick.
The Spirit Dream Warrior was summoned by Finn and Huntress Wizard in the episode "Flute Spell". He appears after Finn and Huntress Wizard play a flute/ocarina duet in the forest and shares an unknown past with Huntress Wizard.
Read more about Spirit Dream Warrior on Adventure Time Wiki at Fandom