Ryoga is the eternal rival and friend of Ranma Saotome, he is the only one who has actually declared as such. Possibly the tritagonista, and one of the strongest fighters in the series. He is involuntarily a globetrotter who always gets lost and has problems with directions.
The name "Ryoga" can be translated as "Good Fang", which is a reference to his sharp canine teeth. Hibiki is translated as "echo or resound".