UB Setups post a:B+K
Step forward Deathcopter G/2: This actually might be the weakest setup. It looks great on paper, but you can tech left/right and quick step out of it entirely. You can also always ground roll clockwise. This DOES hit playing dead though. This makes it pretty weak overall. I tested it with a very quick step forward cancel. You can just stand up and JG it as well.
Immediate Deathcopter G/2: This is a great addition to the arsenal. It hits most techs (left, right, front but not back) and even all ground rolls (not effectively though). This does not hit playing dead. Creates a solid pseudo 50/50 for 236B. It can be JG'd the same way as step forward.
236B: This can be teched any way. (backwards and forwards you can tech then backdash/run forward). But it hits ground rollers way more effectively than either deathcopter. In fact, it's the inverse. It will hit all ground rolls that deathcopter cannot, effectively. It hits playing dead but can be ground rolled forward depending on how close you are when you do it. You cannot just stand and JG this one.
Note: All of the testing was done when I was NM with his huge body and ridiculously good step (tested on Pyrrha too, same results except you could clockwise groundroll instant deathcopter). All the testing was done with 3B > a:B+K point blank range. All of these setups change properties depending on range. You really have to watch how far away they are to cover your bases. Although they have to watch their asses way more than you do because these traps are really really solid. This probably can change from character to character.