Arnold: Oh so we don't exist 

Arty: Calm down biggie. No one knows about you. I had Arnold growing up as a big brother

Cammy: Cecil my older sister 

Ozzie: They died due to drug overdose

Gus: Nope. Only child

Knighty: They disowned me for dating a prostitute...we weren't even dating 

Willy: Nope only child

Tito: Only child

Sara: I had Mike as my older brother