Karl Oakleave

Sven's partner. He is Sven's son (presumably in that role) and approached Halvell and the others under the guise of being a friend of the same age. However, he was struck and sent flying along with a bone monster by a blow from Guideau, whose seal had been broken. His fate was initially unknown, but he survived despite losing both arms, and later changed his name to Oakleave to become Kuga's partner. Although he appears to be a child, his actual age does not seem to be that of a child.