Sub-Zero is first villain in Mortal Kombat series.
Sub-Zero Is the main villain in 2021's Mortal Kombat, not just Scorpion's rival, because they want to stretch the source material into a series.
The Full Story of Sub-Zero - Before You Play Mortal Kombat 1
Why Sub-Zero Is Mortal Kombat 2021's Villain (Not Just Scorpion's Rival)
Why Sub-Zero From 2021's Mortal Kombat Movie Looks Familiar, mortal kombat 2021
Mortal Kombat' Sub-Zero vs. Scorpion Rivalry, Explained - Thrillist
Why Sub-Zero Is Mortal Kombat 2021's Villain (Not Just Scorpion's Rival)
Mortal Kombat' Sub-Zero vs. Scorpion Rivalry, Explained - Thrillist
Mortal Kombat (2021): Joe Taslim's Sub-Zero Interview
Mortal Kombat: Battle Of The Realms Ending Explained
Why Sub-Zero Is Mortal Kombat 2021's Villain (Not Just Scorpion's Rival)