system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] I heard that Juggernaut was at one time powered up enought to break dimensional barriers, can someone illuminate me on the subject?

How did he get so strong? How was he stopped? How strong was he? He could break dimensional barriers, is that superboy prime level?
gpt
Ok, first things first, it's important to know where Juggernaut's strength comes from. Despite his association with the X-Men Cain Marko is not a mutant, he's actually the avatar of a powerful God named Cyttorak. Cytorrak's power is stupidly strong, rivaling the Phoenix Force and other similar entities, and so long as Juggernaut and Cyttorak are aligned in thought and deed he's got access to a huge chunk of it.

During the Trion Saga Cyttorak's powers were co-opted by a third party (the titular Trion gods), who used them to power up Juggernaut with nearly the full extent of them. Driven nearly mad and empowered so Juggernaut was able to rampage across dimensions, only stopped when when Cyttorak's powers were forcibly removed from him.