Tigre de hielo, also known as Frost Tiger, is the confirmed sibling of Fire Leo. His sole motivation revolves around testing the protagonist's combat skills, deliberately avoiding larger conflicts like the Gedow invasion. He displays indifference toward his brother's defeat, concentrating exclusively on proving his own strength through direct confrontation. In battle, he employs ice-based techniques: hurling ice boomerangs and freezing platforms to reshape the terrain. His combat unfolds in three distinct phases. Initially, he darts rapidly across the arena while launching ice boomerangs and creating frozen platforms. The second phase sees him traverse a fixed arc, dropping large snowballs and alternating between triple ice boomerang throws and summoning ice spires that erupt under foes. When severely injured, the final phase activates, heightening his speed and aggression while eliminating projectile attacks after specific fiery counterstrikes land. He remains the only boss character in the series with a verified sibling connection. No further background, character development, or involvement in seasons, movies, OVAs, or spin-offs exists in documented sources.