Cursa
Counterpoke with armoured DB2 at all times.
Mix is way too risky and/or gimmicky imo. I think this being underestimated is one of the reasons why people think he's a lot better than he actually is. He's not trash or anything but he has his problems which people (i.e mostly newer/casual-er players) seem to struggle with sometimes. Smonk and Mira'sI barely mix at all and have had relatively good success. I just lame people the fuck out. They don't know what to do against a very patient, highly defensive Darkseid.
I try and mix every now and again, but I've had matches where my biggest combo was b12, 223, or Doom Stomp and still won.
Omega Beams add up along with the rest.
The real question is why does omega beams hit Atom out of trait like wtf pls nerf DS