Flamethrower

Scorpion's puppeteer can shoot fire from the pipes in its hands, making them like flamethrowers. The flames are fierce enough to melt rocks and incinerate a metal kunai that was thrown at it near instantly. The ammunition is sealed in the the first scroll on its back.

Ekaterina Kiroshika used a similar technique with a pipe in the beak of her puppet Oji, however instead of using natural flames, Ekaterina flowed fire-natured chakra through Oji to fire through the pipe, this fire was even stronger than the flames used by Scorpion capable of melting metals on a higher level than kunai.