Here's a sort of head canon on the lives of Mr. Birchum & Mr. Karponzi before they met each other
Birchum(47 DOB: 07/10/1979)
His Mother was a stay at home mom(but would mostly be at bars or shopping)
His Father was a construction worker
Would join the Navy after graduation as a SEE-BEE(despite his mother's negativity towards his interest)
Moved to California after the Navy & was a decent carpenter
Married his first wife(Eddies mom)after moving & was a messy relationship
Got divorced after Eddy was born & would meet Wendy during a renovation for her mother's kitchen
Got Re-Married with Wendy & would have Janie
Would leave his carpentry job do to mismanagement & would become a Woodworking teacher at a middle school
Karponzi(32 DOB: 21/06/1994)
Was Born 10 after Birchum
Female at birth(either Emily or Emma Karponzi)
Grew up with sisters(2 older sisters & 2 younger sisters)
His Mother was a school counselor
His Father had a job that required him to travel alot(often bring home souvenirs to his kids, making Karponzi fascinated in other countries & cultures)
Figured out he was a Transgender in 7th Grade & got Surgery on his 18th Birthday
Realized he was gay after a one night stand with another dorm mate at University
Graduated with a Graphic Design degree
After realizing GD doesn't make much money, He Became a DEI worker, as well as Utool employee
Would comeback to his old middle school(the same school that birch works at)to be the new counselor
I hope this can act as a blueprint for your Mr. Birchum Comic & other Mr. Birchum endeavors