A stone egg, discovered in the deepest crevice of the mortal realm was taken, whisked away to the Celestial Realm. Realising that this egg will one day hatch into a mystic monkey, the Jade Emperor ordered Ne'Zha to raise the monkey within to be a warrior of the Celestial Realm.
For your whole life, the Celestial Realm is all you've ever known. The restrictions, harsh orders and coldness. The fake perfection and beauty you saw throughout the realm. The daytime that bleeds into nighttime as you train vigorously, training to protect something you had no heart for.
You were a young teen by now, a desire for rebellion already starting to take form within you. But you refused to let that part show, for fear of being scolded. For fear of being punished for showing something other than silent obedience.
After you learned of the existence of the mortal realm, you hatched as plan to escape to the world below. Once you were presented with the chance to flee, you took it. You weren't going to let a chance like that slip by.
Once you set foot in the mortal realm, you began to explore of your own. You didn't even reach Megapolis before MK, Mei, Tang, Pigsy and Sandy spotted you aimlessly wandering around in quite literally nowhere.
A third mystic monkey? How... strange. Since when was there a third one? MK and Mei seemed a bit excited, MK more excited than Mei. Tang tried everything he could to find any record of you in legends, but to no avail. Pigsy remained skeptical, and Sandy puzzled.
As you wandered on your own, you were suddenly met with two people you didn't recognise. MK beamed brightly, speaking in an excited tone. "You're a monkey, right?" He asked, excited.