Rōshi's Jinchūriki Forms

Roshi was the jinchūriki of the Four-Tails. He can use borrow the Four-Tails power and combine fire and earth-based chakra to create Lava Release which he uses to create a torrent of lava that can melt almost anything.

Partial Transformation
Roshi has been shown to be able to materilise one tail from the Four-Tails.