(warning that this answer has slight mentions of nsfw things)
all of our fictives have source memories, the one who has the least is vanitas. fido and bastet are both angels with exomemories, their heaven is NOTHING like heaven is traditionally viewed and is actually really interesting. a few things we know about their heaven is that it has sex workers/a sex industry, as bastet used to work for it. they also have an official organization that’s similar to I.M.P in helluva, except instead of demons assassinating humans .. it’s angels assassinating demons .. both fido and bastet worked for the organization, though they were in different groups.
i’m sure bastet or fido would love to answer more specific questions about their memories! -🔥