I have some Bane combos you can do on any level that has a bounce interactible(Atlantis stage, Wayne Manor etc.)They can be done with no venom and venom levels 1,2 or 3 which I'll include the damage output for all variations. These can be done online as long as the lag isn't horrible for the match, I've tested them all horrible lag matches so you most likely can't pull it off. So here's the combos but here are what the inputs mean incase somebody doesn't know them.
The first combo is Jumping D3, B23, 12R1, 123DB1= No venom 41%, 1 level 45%, 2 level 52%, 3 level 62%. If Jumping D3 is to hard to land, I know its not the easiest in which case you can do B23, 12R1, 123DB1= No venom 34%, level 1 37%, level 2 43%, level 3 51%.
The second combo is tricky to pull off online with lag. It needs one MB(Meter Burn) this one also needs to have venom being used throughout so here it is. Venom level 2, jumping D3, B23, 12R1venom level 3, 12DBF3MB=58% If Jumping D3 is still difficult to land start it like this. Venom level 2, B23, 12R1venom level 3, 12DBF3MB=49%.
So these are what I have so far besides some basic 30+ combos with him, when I make more combos I'll post them but if anyone else has some combos feel free to post since I'm still learning him. I hope this is of use to somebody haha.