Rusty commands a crew of sailor mice as their captain, renowned for his kind-hearted and dependable nature. He exhibits a calmer disposition than the more energetic protagonist Gamba, frequently offering steadfast leadership through perilous situations. A significant physical trait is the loss of his right eye, sustained during a clash with the antagonistic weasel Noroi. This injury stands as an enduring symbol of their bitter rivalry. In his personal life, Rusty shares a romantic bond with Yuri. The character maintains these defining qualities of leadership, resilience, and compassion across all documented portrayals, encompassing both the original 1975 anime series and the 2015 film adaptation.