MArcus isnt mature at all
Just because he had one good moment, now he is mature! LOL! Seen the dumb jokes he always make, and the stupid I am gonna throw the bed in the bathroom prank, I think its funny?
I am gonna venture and say Angel, Sree, Karly, and maybe Rodrigo to be honest. Sree might be a slime, but he is one of the most matures. Siavash sometimes.
I think the most mature is Karly to be honest.