Here's my explanation: everyone knows that toms garage got destroyed in the last episode of season 5 of TTAF, and everybody who watched season 0 sees that it takes place in a different place than seasons 1 through 5, so u might be asking Well then why is Pierre in season 0 and hank and Becca isn't in it! well, Pierre might have lived in the desert before Tom and his friends did... so that proves why Pierre is in season 0, and if u watched the old roommate episode u see that there's an extra room perfect for Becca! well, what if Angela and Becca found out there was another extra room perfect for Hank, so they gave it to Hank, u guys are probably asking "Why does Ginger have Gina in season 0 but not in the other seasons" Well the explanation is very simple! ginger might only bring his toy Gina with him when he's scared! After all, they live in the desert in season 0... and I think that's all! (also I might make a fanmade season 6 soon...)
