Marcus, Stan, And Barry Headcanons ( Because they're being the best bros in the world )
they're all raised by a single Trans Father in 70s and 80s ( with no mother i guess )
Stan was born in 2 minutes early than Barry who's born in 1 minutes late than his was
not only, Marcus was 15 and knew that Barry censors of bullying in his first day in school with Stan as they were 8 years old. sometimes Marcus comforts him and saying that he's not fat, ugly, stupid or a freak because he believes that some people was beautiful, smart and talented in this world
after the graduation of college, Marcus left his brothers when they were 15 in middle school
Stan and Barry had arrived home form school and heard and knew that their dad was dying in a heart attacks during impact
Marcus arrived to see his brothers and knew that their father has died for no reason
Marcus told Stan and Barry about his wife's death crying in pain while holding 3 year old Johnny and being comforted by them
however in the prison when Marcus has trouble memories of disowning his son, Barry comforts him of passion because he knows that Johnny wasn't blaming him expect for Ava's death
Barry was helping Stan how to spell words but Stan was forgotten how he learned in spelling classes in school
they and Johnny heard Marcus' singing voice and knew that his voice sounds as a deathful and egotistic
Barry was smart to speak Filipino and he only said in pick up lines but His Brothers didn't understand but Barry told them the meaning in English
( Human Au ) Stan And Barry recognize or discover that rick is greater 5 inches than Marcus who's less 5 But Marcus was born in 4 month older than rick who's born in 3 months.
( Sorry, short Headcanons )