My What If...(Episode 5): What if... ZOMBIES!?!?

So the story I see is...

In the beginning of Skymation2415's Corona's Weirdmageddon, Bill Cipher does come back, but in this universe, he comes back with a deadly virus! that virus then spreads to the other villains, except Discord/Grogar, who manages to escape, and tell the heroes exactly what happened, but they are too late. Some Heroes like Manny, Sid, Patrick and Twilight Sparkle get infected, but others, such as Spongebob, Spike, Rainbow Dash, Diego and Discord try for the entire episode, to track down a cure for this, and bring everyone they know back to their normal selfs. And just like the Cliffhanger at the end of episode 5 with zombie Thanos, the ending of this episode will be a cliffhanger of Zombie Bill Cipher using his power to either track down the heroes, or destroy the universe (haven't decided on that part yet)