The harder-than-diamond gem on its head is actually a third eye. When it's charging with its head down, Starpardos can still see where it's going. It glows brighter when it's furious.
Its powerful head butt has enough power to shatter even the most durable things upon impact. People in ancient times imagined that Starpardos were transformed from the reflections of stars that twinkled on gentle waves at night.