I am willing to believe that the final episode of Sesame Street will be Cookie Monster deciding to eat planets regardless of the cost of innocent lives and choosing Ernie as his Herald. Or possibly Oscar, I think Oscar would make a great Herald, he has the trash can which he can in theory use for transportation, he has a mini-Herald in Slimy the worm(who has been to space already). Yeah, I change my vote from Ernie(who I think would make a good Herald because of his laugh alone) to Oscar, who is already kind of heartless and doesn't care if millions die to feed his master.
He basically admits at the end that he has a cookie addiction problem there. He says it's a good thing the moon isn't a cookie, because he WOULD eat it.