Gomez - Swashbuckler Rogue
Morticia - Warlock, Undying Patron or maybe Archfey, Chain Pact (Thing is her familiar)
Wednesday - College of Whispers Bard
Lurch - Some kind of weird Monk/Barbarian/Fighter, or something. Something big and impossible to kill or stop, who needs no weapons.
Fester - A good foil to Gomez, he's a Battlemaster Fighter. He can keep up with Gomez in a duel, but is bigger, less charming and tricksy, and less quick.
Pugsley - I got nothin
Grandmama - Warlock, Great Old One, custom divination Pact Boon of some kind
Pugsley? Barbarian. He has clearly sadistic tendencies, does not seem extremely bright, and probably holds in a lot of rage. His name reminds me of pugilist, a word for boxer, so make him a brawler. Let him go into a rage and just wail on a berk with his fists.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.