Hydra

Hydras are large three-headed reptilian creatures that can be found throughout Tyria and the Fissure of Woe.

List of hostile NPCs

Region	Name	Trophy
Guild Wars Prophecies
Ascalon	10 (24) Hydra	Leathery Claw
Crystal Desert	22 (26) Hydra	Dessicated Hydra Claw
Ring of Fire Islands	24 (26) Mahgo Hydra	Mahgo Claw
Core
Fissure of Woe	24 (26) Mahgo Hydra	Mahgo Claw

Notes

• Unlike most spellcasters, Hydras use melee attacks.
• Hydra have additional armor against elemental damage.

Trivia

The Guild Wars 2 Wiki has an article on Hydra.

• The Lernaean Hydra was a multi headed creature slain by Heracles (Labors of Hercules) for his second labor.
• All hydra bosses have a three part name, with one name representing each head. Some or all of them are distorted and/or re-ordered phonetic versions of common expressions. For instance, Nayl Klaw Tuthan is a phonetic rendering of the idiom "nail, tooth, and claw."
• During their idle stance, the left and right heads are fighting with each other.