Ancients Awakened/Wyrmling

The Wyrmling is a Pre-Hardmode enemy that spawns in the Inferno during the day. It acts very similarly to any worm, but unlike most Pre-Hardmode worms it can fly through the air to get to the air.

Trivia

 * The Wyrmling has a bigger counterpart called the Wyrm that can spawn in Hardmode. It is likely that the Wyrm is the grown-up version of the Wyrmling.