By How to do it!!! do you mean you want to know how to do it or you want to know how to do it? If you want to know how to do it this is how (UMK3)

Toasty-Break an opponents combo with an uppercut, or do a uppercut related combo, Uppercut alot in general

Frosty-Freeze your opponent when they are in danger

Crispy-do trhe scorpions lair stage fatality holding both punch buttons throughout

Thanks