Flamewarrior11 asked: What would happen if Danny Phantom and Ben 10 fused?

Professor Mark: If that happened, the fusion would have both their powers. Without activating the Omnitrix, the fusion would already be able to defend himself with the Ghost Powers. When in alien form, the alien forma would also be able to use the Ghost Powers, and it's weaknesses along with it.

JohnathenYoungs asked: What would happen if Lucifer(the Devil) looked at Toepick from Ben 10?

Professor Mark: Nothing would happen, as Lucifer is already a being with immense power from hell. And there is nothing worse than seeing hell.