Gregory was not having a good life after he escaped the Pizzaplex, Freddy was dismantled after he saved the boy by pushing himself and Vanny off the rooftop, Gregory finding out that the Security Guard working there is the same one responsible for the kids disappearances, and now he’s on the run, all alone, no family and no one to turn to… until fate strung him up.
When Twilight Sparkle uses a spell from the Chamber of Creation, she accidentally summoned Gregory into her world. With no way for him to go home and no family to even go to, Twilight Sparkle must have to now help Gregory, now Glamrock Superstar, to adjust his life in Equestria.
Stories inspired this fanfic:
Courage of Corona by VirusChris
https://www.fimfiction.net/story/75650/my-little-pony-courage-of-corona
A Giant Adventure to Equestria by ThePinkedWonder
https://www.fimfiction.net/story/427481/a-huge-adventure-in-equestria
Twilight’s Little Comet by GoebelTron
https://www.fimfiction.net/story/502112/twilights-little-comet