Mark is literally the perfect example of a ken character, no personality outside of being support for eduardo. He is essentially an accesory to eduardo everytime he shows up and was only created to give matt a counter part.
He is eduardo's trophy boyfriend, and don't you forget it.
Enid: "EW"?!
Enid: Stop trying to ruin our arts and crafts date!
Wednesday: …
Wednesday: Enid. Those are our initials.
Enid: …oh.
Wednesday: Don’t act like it’s not your fault. You’re named like a grandmother.
Enid: SaYS THE ONE NAMED AFTER HUMP DAY?!