system
Given the following post, respond as if you're commenting on Reddit:
human
[Aladdin] When first released by Aladdin the Genie exclaims how he had been in the lamp for 10,000 years. Later when throwing Jafars lamp into the Cave of Wonders he says “10,000 years will cool him off” - does this imply the Genie himself was once much darker and he was going on his own experience?
gpt
Djinn don't typically start in bottles. Jafar was the exception.

According to legend, King Solomon was granted a ring by none other than God Himself that allowed Solomon to command the djinn. By using the ring to make his mark on a wax seal, Solomon was able to imprison a djinn (or hundreds of them) into bottles, lamps, and various other objects. He only did this to the most troublesome of djinn; there are still free djinn out in the world, but they've learned to rein in their tempers (for the most part) lest God grant a similar ring to one of his faithful worshippers.

Genie was probably a very naughty djinn - imagine someone with his sense of humor, but malicious. A few millennia of forced introspection is probably just what he needed to mellow out.