This is a half question, half challenge. What character has the highest damage combos that require zero meter? That means no super OR ultra. Practical or impractical doesn’t matter, but bonus points if the combo could actually be done in a match somehow.
Obviously infinites don’t count (no Run Stop Fierce) and Turn Punch Final isn’t really a “combo”
Obviously post if a combo is character specific or requires a counter hit or meaty setup.
Here is 2 very practical combos I know of that do A LOT of damage and require zero meter.
Seth (works almost anywhere except the very middle of the stage)
Pretty much a standard seen BNB combo that does crazy damage and can be landed off of a crossup
fj.HK - cst.HK - c.MP - MK Lightning legs - 3x air stomps - dive kick = 411damage 690stun(!)
Cody - Corner specific, works on MOST characters but a handful have reeling animation that screws it up on the c.MP - HK Ruffian)
nj.HP - cst.HP - c.MP - HK Ruffian - MK Ruffian = 416damage 610stun
I fully expect to see some crazy stuff that Sakura or E. Ryu or C Viper can do.