Which Legend of Zelda game does this Link with the white cap belong to?
It looks like Fierce Deity Link, a form Link can transform into using the Fierce Deity's Mask in Majora's mask. In addition to the white hair and cap this form also has three blue gems under the collar that you can see in your picture.
Image from zeldawiki.org
That looks like the Fierce Deity, which Link can transform into by using the Fierce Deity's Mask in Majora's Mask.
