Radarr

Radarr is Aerrow's copilot of the Storm Hawks. He's a unique humanoid creature that's mix between a lemur and a rabbit. He doesn't speak human language but is shown to be incredibly intelligent.

Ultimate Story
Radarr made his first appearance in Ultimate Story 4. When the Heartless plagued the world of Atmos, he and his friends were powerless to fight against them. However, when Fox and his friends arrived within their world, they were able to combat the threat. They also met and befriended the Storm Hawks and dedicated themselves to saving their world from the threat.