Link is hired by the Hunter's Guild to hunt down a Dreadking Rathalos

[Ultra_Sonic]

However, since there is more than one incarnation of Link, the Guild rules that whichever version can find and slay the Dreadking Rathalos* the quickest gets paid a HANDSOME fee.

For this scenario, each version of Link will have all of his gear from each Zelda title he was in canonically. For the record, OoX Link =/= ALttP/LA Link, according to the most recent official information in the Zelda Encyclopedia.

(I am just assuming that there is more than one Dreadking Rathalos in existence; I don't really know much about Monster Hunter.)

[The Chou Lives]

The one with the Fierce Deity mask. Just show up and sword beam it’s head off ( can cleave gigantic sand worms that way.)

[Ultra_Sonic]

The one with the Fierce Deity mask. Just show up and sword beam it’s head off ( can cleave gigantic sand worms that way.)

Ocarina of Time/Majora's Mask Link, then?

[Yun Lao]

Ocarina of Time/Majora's Mask Link, then?

Aside from the Fierce Diety, Majora's Mask Link also has the Giant's mask, which can, as the name implies, make him into a giant.

[Ultra_Sonic]

Aside from the Fierce Diety, Majora's Mask Link also has the Giant's mask, which can, as the name implies, make him into a giant.

I've never played a proper Monster Hunter game, but there was a collaboration event with Dragalia Lost last year, and I can confirm that Dreadking Rathalos is MASSIVE, even by Dragalia Lost dragon standards.