"HMS comes from termina to sell masks.
HMS goes back to termina.
Skull kid shows up to termina.
HMS gets mask stolen from him in termina.
Skullkid goes back to Hyrule (no reason why he didn't take over Hyrule)
HMS goes to hyrule and finds link .
Link gets followed by HMS and skull kid."

this all happened in childhood.

Termina doesn't get destroyed, because skullkid is in lost woods in the adult timeline.

I have no clue why skullkid is still alive and is friends with the giants.
When a kokiri leaves the woods they will eventually die . when kokiri gets lost in the woods they turn into skull kids.
skull kids are technically still kokiri , so they should eventually die when they leave.
The giants in mm have some history with him.

maybe the skullkid in oot is actually from a parallel tribe of kokiris that got lost in woods of mystery. and the giants were their guardians , and since the guardians arent ruled by the forest , the mm kokiri could leave the forest whenever they want.


but thats more fanfic than theory.

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