I got this theory from DaphneBoyden and OmbrexitheMermaid, and it's that all of the

people that we've met could possibly be the new order's parents. I totally agree with this

theory! Let's see...

Isa looks like Jesse, with Black hair and Green eyes, she's great at fighting, she'd do anything to protect the people of sky city, and she has a cute pet who loves her.

Jesse has the same appearance as Isa, with black hair and green eyes, she's a great fighter, she'd do anything to protect her friends, and she (*sobs*) had a pet who loved her.

Milo has blonde hair, loves to build, and he's the leader of a group called Build Club.

Lukas has blonde hair, loves to build, and he was the leader of The Ocelots.

Cassie Rose kills people, and she's a redhead.

Petra is good at killing mobs, and she's a redhead.

Harper has a dark skin tone, and she loves redstone.

Olivia has a dark skin tone, and she loves redstone too.

The only missing person is somebody that resembles Axel. Yesterday there was a tweet from Eric, Saying that episode 8 has his favorite character so far, which means it may be somebody who looks like Axel.

This theory does make sense quite a bit...

Thanks people who introduced me to this theory!