Only son of rival robber leader Borka. Initially plays with Ronia by a chasm, becoming her secret friend. Captured by Ronia's father, he is exchanged for her. Escapes into the woods, shares harrowing adventures with her, and ultimately decides to leave the robber life behind.
Their friendship directly challenges the entrenched hostility between their fathers, forcing a resolution that unites the two robber bands.
A strained paternal dynamic where Borka expects traditional robber loyalty while Birk seeks autonomy and a different path.
Initially wary due to the feud, Mattis gradually acknowledges Birk's courage and potential, softening his rigid stance.
Explore the full interactive character relationship map of Ronja, the Robber's Daughter