From the Super Mario Wiki
Pyrospheres are enemies found in Super Mario RPG: Legend of the Seven Stars. They are located in Barrel Volcano, as well as Bowser's Keep. Pyrospheres usually appear with much stronger creatures in battle, such as Chained Kongs or Corkpedites.
Pyrospheres are the stronger relatives of the same-colored Sparkies and blue Fireballs.
When Mario and his allies reach the volcano's main chamber, a large group of Pyrospheres are flying around. Spotting the group, the swarm quickly condenses, forming the dreaded Czar Dragon.
Names in other languages
- The enemy's name is a combination of the Greek words "Pyro" meaning Fire, and "Sphere" meaning Globe or Ball.