Clefron gather during full moons. They greet by ramming headfirst into each other, which unleashes a metallic ringing sound. This sound causes magnets up to 7 km away to temporarily spin and even disrupts nearby Onix, causing them to dig in circles.
When two Clefron meet in the wild, they fight for territory by bashing into each other with their steel bodies. On every night of a full moon, they come out to play.