Just like in most Multiverses.
Once life developed far enough, powerful beings emerged.
And the powerful were never content to accept fate or death.
Some escaped fate's designs, became Dimension Lords, and gained extraordinarily long lives.
But it was a lonely road, one they could only walk alone.
Their loved ones and families would slowly grow old and die. As time passed, everyone they knew would leave them, one by one.
Still, even on that road, they needed a few kindred spirits to share the journey.
The Quantum Trading Domain was where the Dimension Lords of this Multiverse traded with one another and exchanged information.
At that moment, in a Quantum Universe, Satan, Lucifer, Dormammu, Nightmare, and the other Dimension Lords were chatting and laughing together.
"Haha, the Celestials are getting desperate. They've even started threatening us."
"Of course they have. The Cosmic Locusts are giving them enough headaches already. They don't want us causing trouble too. Kekeke..."
"So what should we do now? Go for something big?"
"No rush. Let's wait for news from the Celestials."
Yes, the Celestials had a presence in this Multiverse too, and they had already made contact with these Dimension Lords.
The Dimension Lords had even discovered that the Celestials were behind the whole Cosmic Locusts incident.
As for their purpose, the Celestials naturally hadn't told them. They had only said that, when the time came, the Dimension Lords could devour the Reality Universe as they pleased.
After they had chatted for a while, a giant wreathed in flames suddenly appeared in the Quantum Universe. Beside Pyro stood Thanos's Avatar.
"Kid, this is where beings like us do business. Mainly, it gives us a place to trade freely away from those guys."
Thanos looked around and frowned slightly.
"A Quantum Universe? Aren't you afraid