Character Vitals
Bracket 1 [~9,000 Health] : Arthur, Chun Li, Morrigan, Rocket Raccoon, Spider-man, Strider Hiryu, X, Zero, Black Panther
Bracket 2 [~10,000 Health] : Captain America, Captain Marvel, Chris Redfield, Dante, Doctor Strange, Dormammu, Firebrand, Frank West (Lvl 1), Gamora, Ghost Rider, Hawkeye, Iron Man, Jedah, Nova, Ryu, Spencer, Ultron, Monster Hunter
Bracket 3 [~11,000 Health] : Haggar, Hulk, Nemesis, Thanos, Thor, Sigma
Thanks to Li Joe
Universal Mechanics
Combo System
MvCI offers a versatile combo system which allows any character to reach their full potential. As a universal rule of thumb, all buttons can chain into the next of greater strength. For example 
combos into 
which can then combo into 
followed by 
. Punches are the lower priority with Kicks at a higher priority, however any combination of buttons can always lead into 
which is a universal launcher that begins an air combo. For example you can do this combo:
into
Even though we already used early on, we can always link into a launcher at the end of your ground combo string. Some characters also have "command normals" which are normals that act differently when holding a direction. These command normals also take a similar priority, if for example you had a command normal on 
and , you should be able to do this combo:
into
After launching your opponent, hold 
and you will chase your opponent in the air and continue the combo. Try this combo:
then jump by holding then
As a universal rule of thumb, is an air combo ender that will place your opponent into a Ground Bounce which can be followed up with another combo. After your first air is used in an air combo, your next air will put your opponent in a knockdown that you cannot follow up with, thus limiting your air combo potential to only two reps per character (however each characters combo paths are unique and you are encouraged to explore this system using your characters capabilities).