Skeletron Prime

Skeletron Prime is the hardmode equivalent to Skeletron and but instead of two arms, Skeletron Prime has four, added with its health 25,000 Skeletron Prime is a very hard boss. It can be summoned by using the mechanical skull at night or on a very random night it will say 'you feel the air getting colder around you'and Skeletron Prime will spawn. The easiest way to defeat this boss is usually the Megashark with Chlorophyte bullets, lots of them. Skeletron Prime drops Souls Of Fright, greater healing potions, Hallowed bars, the Skeletron Prime mask, and the Skeletron Prime trophy.