How to Beat King Hydra

King Hydra is a Story Boss in Dragon Quest 3 HD-2D Remake (DQ3). Check out their information and moveset, as well as the best strategies and party to beat them!

King Hydra Basic Information

King Hydra Stats and Information

King Hydra Information
Rec. Level	Drops
45	None
Location and Walkthrough
Zoma’s Citadel Damdara to Zoma’s Citadel

King Hydra Weaknesses

King Hydra Moveset

King Hydra Spells and Abilities

How to Beat King Hydra

• Equip Rousing Rings to Prevent Sleep
• Heal Using the Sage's Stone
• Equip Fire Resistant Gear
• Lower Inferno's Damage with Insulatle
• Put King Hydra to Sleep
• Move First With an Accelaratle Buff
• Use Monster Pile-On as Your Main Attack

Equip Rousing Rings to Prevent Sleep

Sweet Breath is an annoying move that can put multiple party members to sleep. Equip Rousing Rings on everyone to prevent this from happening because you can easily get wiped if multiple characters are asleep.

Heal Using the Sage's Stone

Instead of casting healing spells, you should use the Sage's Stone instead. This both preserves your MP for future boss fights, as well as lets you heal while Fog of War is active.

How to Get Sage's Stone and Effects

Equip Fire Resistant Gear

Since King Hydra's most threatening attack is Inferno, you'll want to wear fire-resistant equipment to counter it. Make sure you do this so that the Sage's Stone can keep you topped up.

List of Fire-Resistant Equipment

The Hero's Shield and Auroral Armour are extremely powerful Hero-exclusive equipment.

List of Equipment

Lower Inferno's Damage with Insulatle

Besides wearing fire-resistant equipment, you'll also want to cast Insulatle to further reduce the damage of Inferno. However, you should still be wary of its regular attacks, especially for spell casters who have a relatively lower defense stat.

Insulatle Effects and Level Learned

Put King Hydra to Sleep

If you don't want to worry about the King Hydra's actions, you can always put it to sleep instead. Use the Duplic Hat and Snooze combo to cast it twice a turn, but once Fog of War becomes active, use abilities and items like Sleepy Slap and a Snooze Stick instead.

Move First With an Accelaratle Buff

If you find that your party's slower than King Hydra, you should cast Acceleratle to increase your party's Speed. This is especially important for whoever's trying to put the boss to sleep so that they can get it off before they act.

Acceleratle Effects and Level Learned

Use Monster Pile-On as Your Main Attack

Unless you have a high Attack stat, you'll want to use Monster Pile-On as your main attack. Instead of taking into account your weapon and stats, the damage increases depending on how many friendly monsters you've recruited.

Monster Pile-On Effects and Level Learned

Recruit at Least 100 Monsters

Since the ability's damage scales with the number of monsters you've recruited, you'll want to have at least 100 friendly monsters to maximize its damage output.

All Friendly Monster Locations

Use Wild Side to Act Twice Per Turn

If you've recruited 50 monsters, Monster Wranglers will be able to use Wild Side to perform Monster Pile-On twice per turn. This also applies for every other action so, for example, if you used Wild Side with the Duplic Hat, you can get up to four spell casts per turn!

Wild Side Effects and Level Learned

Best Party to Beat King Hydra

Recommended Party

Vocation	Role and
Hero	・Use a Snooze Rod to put the boss to sleep. ・Assist with healing if needed.
Monster Wrangler	Merchant - Monster Wrangler ・Spam Wild Side + Monster Pile-On. ・Help put King Hydra to sleep if needed.
Monster Wrangler	Thief - Monster Wrangler ・Spam Wild Side + Monster Pile-On.
Sage	Mage - Sage ・Support the team with Acceleratle, Insulatle, and the Sage's Stone. ・Can give the Sage's Stone to someone else if you really need a second person to help heal.

DQ3 Best Party Setup

Dragon Quest 3 HD-2D Remake (DQ3) Related Guides

List of Bosses

Story Bosses

Post-Game Bosses