-Mark's boss is Matt's older brother. So Matt uses this to annoy mark. So if Mark said anything bad, Matt would say it to his brother. Mark would then be sent on a impossible sorta job so he ends up getting hurt, as a punishment.

-Mark has a scar under his eye from his past, which is hidden by foundation. If you wiped it away enough, you'd see it.

-Mark will not allow anyone to see him at his worst. Because he's only in the job for revenge for his father, so he sometimes shuts everyone out his room and cries to himself.

-Mark isn't the romantic type, so it's pretty rare to see him show love towards another person, more likely because of the past.

-Mark rarely shows any other emotion then confusion (subtly), annoyance and maybe some straight up relief. It's very rare to see him get fully sad in front of people, happy, or even get really angry.

-When he's angry, people tend to stay away from him because they're terrified of him when he's scared. It's because he yells a fuck ton and swears his ass off and basically throws everything. It usually ends with people having to clean up and Mark staying in his room before coming out and doing a apology, which has no emotion in it.

-Mark actually hides and bottles up his feelings a lot, even if it isn't healthy.

-Mark has his own key for his own bedroom door. It's because he hates people sneaking into his room.

-Mark has two brothers. One is a mafia boss, because family (mike) and one (Lark) is in a wheelchair because of the past, which actually paralysed his legs, so, yeah.

-if you ask mark about his family, he'll shut down, he'll not answer and leave and wait a couple hours before, ya know, coming back and acting like he didn't hear anything.

-Mark doesn't mean to be like this but it's a defence sorta mechanism.

-Only reason he got a boyfriend was because he was the first to find out Mark was a hitman, outside Matt knowing because of his brother. And he was kinda the first to sorta see him cry. Eventually they managed to build trust.