Told you, a nobody came out of nowhere can overpower supergirl now. Why spent all these efforts introducing Reign when they're gonna just drop a villain out of nowhere?
John Vincent But as soon as they introduced Reign for this season, we all know that the Worldkillers are also coming along the way, because they are one package, so it's not out of nowhere. And Worldkillers are supposed to be strong. In fact, in the comic Supergirl never defeats them, it's Reign herself that leave the battle scene in order to save one of them.
nobody came out of nowhere? dude she's another worldkiller. Worldkiller are far stronger and more powerful than an average kryptonian under the yellow son.
Take some kryptonite knives and carve out Reign and her worldkillers hearts and see how tough they are and as repayment for what they did to Supergirl.
Matt012763 Don't underestimate the Worldkillers. In fact, Supergirl never really defeats them, she can only manage to hurt of them, and then Reign herself ceased away from battle in order to save one of them. If they continue to battle, Supergirl most likely will die. So, if they stay true to the source material, it's not as easy as you think.
Erepyon If Supergirl dies then the show is over, but if they plan on having a season 4 without the worldkillers for instance. They're not going to let Supergirl die
Bizarre Shenanigans No, what I mean with the battle is in the comic. The battle in comic end with Reign decided to leave, not with Supergirl defeated them. Showing how powerful Reign and the Worldkillers are. Of course, Supergirl won't die for the sake of the show xD But, if we remember in one of earlier episode, Mon-El said that by his future knowledge, Reign and the Worldkillers would end up leaving Earth, so maybe it won't be too different with the comic. Supergirl didn't actually defeat them like her previous enemies, but they leave Earth nonetheless.