Ahh I all love these ideas so much! They aren't spot on with personalities but I can see all these scenarios happening.
Also for @Young-Dusty I'll answer you questions:
Ember (smol child) would most likely turn to Pike (mid-twenties aka the only real adult) when she is in need, Pike (who came from a very neglectful and emotionally/verbally abusive home) doesn't really get emotionally connecting with a child, or even how to truly comfort someone but eventually she gets the hang of it as she learns to open up with the help of Zara (vampire lesbians wine aunt). Caiman, one of the two teenage boys, would be a close second since he is a very kind and caring individual and is better with comfort since he has siblings as well, even if they are older then him. Zara and Jax (the other teenage boy) are extroverts, and sometimes are overwhelming for Ember sometimes, that doesn't mean she doesn't trust them to help her of course, its just that they aren't the best at emotional support since they both battle are kinda battling their own demons and helping each other more then others, especially Zara.
Pike would be more reluctant to cave into a "fun day" at the fair since they have a mission to complete, but the others are kids and heart and would absolutely have a blast! Pike would still warm up to having fun but she would try to make sure no one gets Ember killed or anyone else for that matter lol.
Pike somewhat holds a lot of the responsibility in the group, although Zara is able to help and comes in second for responsibility. Pike can handle a lot so there isn't a lot that could make her snap, the group does trust her the most since she is able to help protect them the most and offer the most emotional support. The other four are still around for Pike of course, she has a lot to protect and a lot to lose by the time she grows close with everyone and they are able to help her reclaim her ability to know what love it and what a family is to her.
I'm not good at explaining things but its a fun dynamic to play around with since there are so many different age ranges and backstories that mesh.