|“||This angry little guy erupts constantly. Watch out for lava burns!”|
|— Calderon's Cast Description • Kirby's Epic Yarn|
Calderons are brown volcano-like creatures with black rocks inside of them, an orange mouth, and a black button located at the top. They look perpetually unhappy.
Calderons sit in the lava of Lava Landing -- as such, they are typically below Kirby or Prince Fluff. Calderons attack by shooting two flaming rocks into the air when the heroes get close. One rock goes a short distance upwards while the other goes a higher distance upwards. These rocks cannot be wrapped up into yarn balls. Calderons themselves can be wrapped up into yarn balls, however.
- In pre-release footage, Calderon shot out two Bomber bombs rather than two flaming rocks.