During gasters time in the void, could he see into other multiverses such as spidermans or was he limited to his own?

In the cosmology of AFAC, worlds in a multiverse are arranged with ones more similar to that world tending to stay closer together. So the closest thing Gaster might’ve seen from his vantagepoint would maybe have been like… if someone’s ever made an Undertale/Spiderman crossover fic, he might’ve seen that. Anything not related to Undertale would just be too far away for him to see clearly.

-TQ