Rōshi became the Jinchūriki the Four-Tailed Beast at a very young age. He left his hometown of Iwagakure at some point to understand and control the power of the beast within him. By borrowing the Four-Tails' power, Rōshi was able to use its Lava Release ninjutsu, a combination of Fire and Earth-based chakra. He was captured by Kisame Hoshigaki of Akatsuki and later died as the result of having the Four-Tails extracted from his body.