Despite his youth, Riku is an exceptional at hand to hand combat, possessing an exceptional amount of innate amount of super-human physical strength that has been substantially boosted by the training he underwent with Tadashi as a child. Even before he was trained by Tadashi, he was able to beat up much older psychopaths and bullies when he had no home for himself on the streets. After being taken in by the Revolutionaries, his abilities increased ten-fold After traveling with two different crews and getting older, Riku has gained more intelligence, strength, and all around ability prowess.