Who awakens whoever's in the Cryptum?

Title says it all, who do you think wakes up whoever’s in the Cryptum, Master Chief or the ‘Covenant’? And what do you think his reaction will be?

Probable whoever has the loudest alarm clock… so chief.

“Could we possibly make any more noise?”

“I guess so.”

The Chief. He thought he’d shoot his way in, mix things up a little.

Caboose awakens it.

I am pretty sure his reaction will be to take a huge piss. I mean common I have to go just after 8 hours so yeah he will probably have a huge morning wood and have to pee.

Master Chief probably opens it. Then him and the Didact become best buds over the trilogy. Arbiter gets a little jealous. Eventually the Didact helps Master Chief mutate and -Yoink- just like Bornstellar did, and bam, Master Chief is awesome. Then the Arbiter becomes the fearsome enemy he once was and is killed at the end of Halo 6.

obviously it was his alarm-clock hes just cranky cause he dont wanna go to school

Probably the Master Chief, though, the Covenant do have a reputation of awakening ancient entities…