In Mortal Kombat 1, in addition to the mentioned characters Johnny Cage, Scorpion, and Sub-Zero, there will be 16 more new characters joining the game

Reddit user r0000r claims that at the start of Mortal Kombat 1, only 19 characters will be available. Here is the list of these characters:

1. Ashrah
2. Havik
3. Johnny Cage
4. Kenshi
5. Kitana
6. Kung Lao
7. Li Mei
8. Liu Kang
9. Mileena
10. Nitara
11. Raiden
12. Reiko
13. Reptile
14. Scorpion
15. Shang Tsung
16. Sindel
17. Smoke
18. Sub-Zero
19. Tanya

The release of Mortal Kombat 1 is scheduled for September 19.