Friday Addams she/her But cousin to wednesday (will not be in the story as she's not my character)

Rosie Hopper 

Joyce and Hoppers baby she/them Lesbian

Sariya Sinclair 

Cousin to Enid (they are related here) Straight she/her 

Leona Zander or 17

Els sister from the lab. Adopted by the Zanders who are a family that popped into my head. They/Them Non Binary.

Matt (whatever Yoko's last name is) He/him straight. 

Lanyo Munson 

Eddie's long lost brother. He/him Bisexual 

Bobby Smith

Grandson of a professor at Nevermore. they/them bi prefer boys