Originally Posted by Black Dynamite
Well it could still be Braniac that gave them the tech to destroy krypton. It was never revealed who the mysterious visitor was.
Gave the tech to a neighbour world? WTF. That just doesn`t make anysense whatsoever. The brainiac or a good villain would just go and destroy the world by himself, like he did in the comics. Just go to Krypton and shrink its capital. The explantion for Krypton was plain stupid and made no sense. The villain sucked and looked terrible.