Which of the original Mortal Kombat characters are S-tier? Choose 2 and explain why.
Here is a list of some of the most iconic Mortal Kombat characters, along with their tier status:

1) Sonya Blade - S Tier
2) Liu Kang - A Tier
3) Mileena - B Tier
4) Sub-Zero - C Tier
5) Shang Tsung - D Tier
6) Cyrax - E Tier
7) Kitana - F Tier
8) Jax - G Tier
9) Reptile - H Tier
10) Smoke - I Tier
11) Kabuto - J Tier
12) Takeda - K Tier
13) Skarlet - L Tier
14) Ogre - M Tier
15) Fatality - N Tier
16) Akuma - O Tier
17) Cyber-Shanx - P Tier
18) Shang Tsung's Four Heavenly Kings - Q Tier
19) Jubei Kenshin - R Tier
20) Mileena's Revenge - S Tier

It can be difficult to definitively determine which characters are considered "S-tier" or not as different sources may have varying opinions on this matter. However, based on the criteria listed above, several of the original Mortal Kombat characters are generally regarded as being among the best in the game and worthy of consideration for competitive play.