Main antagonist[spoiler]-turned-hero and atoner[/spoiler] from the cartoon [[Amphibia]]. He was the commander-in-chief of a civilization of interdimensional raiders [spoiler]led by [[the core (amphibia)|The Core]], but would later defect to the protagonists' side, help defeat The Core and try to atone for the many evil deeds he committed or aided in during his long tenure both as king and his predecessor's commander-in-chief[/spoiler].
andrias leviathan