Alex Wilder, the leader, had no superpowers and was the one who betrayed his comrades for his parents. The same parents who wanted to kill him. Showing that the black male was still a slave. Pass.
BU bu bu Marvel is still about diversity
He's not a slave, he's the leader of the team.
In fact... he's one of the only team leaders in comics where the entire team is subserviant to him with no desenters.
Most teams have a Batman type characters lurking in the wind for the moment the stronger superman type leader slips up to take over. Or they will have a Wolverine type character more badass than the stoic Cyclops type leader that believe they should lead even though leader is competent.
But on Runaways each one of those lil white kids fall in line behind Alex Wilder and never question for a second he isn't the best possible leader.
On all the art he is front and center with everyone else cascaded behind him.
He isn't a token black character on the team, he's the clear leader... answering to no one. Doesn't answer to the team, doesn't answer to the gods (he argues with the marvel comics gods at one point) and along with Thanos, Doom, and Mephesto is one of the only ppl to argue with death.
So IDK where you would get the notion he is a slave.

He's a black male from LA rocking a natural armed with genius level intellect.

talking about hes a slave.