X-23 online brings sadness to me daily. I'm forced to do only LMHS, j.MMH 2H 236L, land, 236M....rather than uber cool, more damaging, and better meter building:
LMHS 214H, j.MMH, land, forward jump, j.MMHS, land, forward jump, j.MMH 2H 236L, land, 236M (full)
That is NEVER going to land online...EVER...T_T
The top 4 scrub characters to use online are: Ammy, Zero, Dante, and Sentinal (derrrrr). The first 3 can just mash for easy combos while having very easy hit confirms and constant forward movement to offset advancing guard. Their basic combos are stupid easy and lead to convenient DHCs. Sentinal needs no explanation. I'm finding rush down characters are the easiest to pick up. They're REALLY mash friendly and super easy to hit confirm off anything for a basic combo.