system
Given the following post, respond as if you're commenting on Reddit:
human
[IT Chapter 2/ Coraline] when the losers bully Pennywise and “doubt” his powers, we watch him shrink and claim the he destroyed worlds. I’m pretty sure that (in the book), the Other Mother says just that about herself. Could these two beings be related?
gpt
The Other Mother is likely a creature of the Prim, the void between worlds, similar to It, but probably a different creature.

You also can't take Its boasts at face value. He claims to be on the same level as Marturin, but he was soundly defeated by a shard of the dying Turtle's power sent through the multiverse. Meanwhile It can barely stay awake for a few months at a time, and has been trapped in a cave for several million years.

It also had definitely not destroyed any worlds. He's been trapped in that spot ever since Gan sang the multiverse into existence.