Here's a little combo video that I threw together after I got the 1.02 update for Injustice: Gods Among Us and went to check out the Flashpoint Batman costume that came with it. Figured out some 40-or so-% combos using one bar, no interactables, while messing around in training mode. And yes, I cheated. The last combo uses 2 bars of meter.
Song: BAT MAN ~crescent night story~ by Sue Cream Sue