King Worm (Metroid)

The King Worm, additionally called X-56V and Diorumu, is the first boss Samus Aran faces in her mission through Metroid: Zero Mission.

History
After finding and gathering her missiles on the planet Zebes, Samus encounters and fights the King Worm, its main weakness being the missiles stuffed in Samus's arm cannon. If the player doesn't kill the king in their first encounter, they can have several other duels later in the game on Brinstar.