Some 60% 2 meter Billy combos
https://www.youtube.com/watch?v=daJF7vIMXFk1st. combo: j. D, cl. D, [BC] cl. D, qcb+AC, dp+B, qcfx2+K = 600 damage, corner only, any amount of max mode meter. 506 if you use cr. Bx2, cl. B [BC] etc. I noticed that the qcb+AC whiffs on crouching opponents, so after you max mode activate, just use cr. C to stand them up, but the damage is 10 points lower.
2nd. combo: j. D, cl. D, [BC] cl. D, qcb+AC, dp+BD, qcfx2+K = 621 damage, corner only, 1500 max mode meter. Similar to the above combo, switch cl. D with cr. D because qcb+AC whiffs on crouching opponents. 534 damage if you use cr. Bx2, cl. B [BC] etc. Delay the dp+BD a bit after the qcb+AC hits for the super to connect as soon as you hit the ground from the dp+BD.