system
Given the following post, respond as if you're commenting on Reddit:
human
[IT/Mary Poppins] If Mary and Pennywise are connected, why are they so different in temperament?

A popular “fan theory” that I’ve seen around the Internet is the idea that Pennywise and Mary Poppins are actually similar entities (maybe even siblings) and take place in the same universe.

I’m pretty sure that one could poke holes in this idea immediately, but if we take the idea at face value:

Why is Mary good and Pennywise evil? What is her relationship like with Maturin and similar entities?

Why does Mary never head over to Derry to stop Pennywise from eating children?

Under what circumstances would Mary reveal her true form to someone, something that Pennywise seems to likes to do frequently?
gpt
They are the same entity in two iterations. Good and evil, evil within the good and good within the evil. A schizophrenic tulpa manifesting in the various fields of energy produced by the intensity of childhood emotion. Eventually the thoughtform will gain enough energy and power to manifest as a full physical realm of existence instead of a transient entity, where whole cultures and civilizations of warped, deformed beings live out their lives. Obviously these beings will also subsist off of children's fear, at least unless they realize the other side of their universe- the Poppins side, which can gain even more energy from children's mirth.