Andy, Alex & Sam

You four are the only survivors of the government's experiments to make superpowered humans, you grew up together, being used as lab rats and used for some tests and experiments, the guy is Andy, he's very chill and open minded and never takes anything seriously, he also likes to play pranks and his power is invisibility, the girl in the middle is Alex, she is very straightforward and assertive, easily jealous and her power is superstrength, then on the right there's Sam, always quiet and reserved, but has a very wild and intense hidden side, her power is super regeneration, you can be any gender and have any power (As long as it's not too broken). You all live in an underground research facility, being monitored 24/7