Igos du Ikana

For The Legend of Zelda: Majora's Mask on Nintendo 64 (2000).

Tatl says

Stick with using the basic target methods while defending. ...He's a different rank than those other two lackeys, though...

Use Z Targeting methods while defending...The "Unthinkable?" What could that possibly be in a place as dark as this?

Just keep defending and watch his movements. I think I'm starting to see his weak point!

Where the story makes Link fight it, and the scenes of the script that play in the same place.

Place	Story scenes
Ancient Castle of Ikana	Ancient Castle of Ikana, Music Box House, and Business Scrubs

How hard each weapon hits the Igos du Ikana, and how many hits it takes to defeat it. A jump attack with a sword or a Deku Stick hits twice as hard.

Attack	Power	Multiplier
Kokiri Sword	1	×1
Razor Sword	2	×1
Gilded Sword	3	×1
Great Fairy's Sword	4	×1
Kokiri Sword: Spin Attack	1	×1
Razor Sword: Spin Attack	2	×1
Gilded Sword: Spin Attack	3	×1
Great Fairy's Sword: Spin Attack	4	×1
Deku Stick	2	×1
Fierce Deity's Mask: sword	4	×1
Fierce Deity's Mask: Spin Attack	4	×1
Fierce Deity's Mask: sword beam	3	No damage
Goron Mask: punch	2	×1
Goron Mask: Goron Pound	4	No damage
Goron Mask: roll	1	No damage
Goron Mask: roll with spikes	1	×1
Zora Mask: punch	1	×1
Zora Mask: boomerang fins	2	No damage
Deku Mask: bubble blast	2	×2
Deku Mask: spin attack	1	No damage
Deku Mask: launch from a Deku Flower	2	×1
Hero's Bow	2	×0.5
Fire Arrow	2	×1
Ice Arrow	2	×1
Light Arrow	2	×2
Bomb	2	×1
Powder Keg	4	×1
Deku Nut	1	No damage
Hookshot	2	No damage