The guest characters I spy of,
Bob Fish - Bob's Birthday and also Bob and Margaret.
Wife - The Big Snit
Boy - Blackfly
Mr.Johnson and Yellow Cat - The Cat Came Back and also Johnson and Yellow Cat make a great cameo on Runaway.
The Dead Mailman - Speical Delivery
The 3 headed - Tête à Tête à Tête
Well that's everybody I guess?