How will BSSM develop as a team?
Well, at first glance, I'm not sure. But With some thought, I'm thinking that the team will grow to be a supportive almost family-like structure with all three of the boys acting like the brothers that Billy never had. But I also see Mikado becoming the lone wolf of the group and then only opening up to a skilled fighter he looks up to, love interest, or best friend type. Those lone wolf types are hard to pin down in a family dynamic I think and may cause trouble for that outcome. But now that I think of it Billy's revenge plot cause some trouble for the family dynamic as well. We'll just have to see how it goes.
Team Moves?
Ok so we have
Sniper+Hammer+lasso
Bazzoka+heavy guns+imovable force
bō staff+Kusarigama+dragon that can eat dust to blow it back out
Blade Arms+crossbow+Ninjitsu clones
We could mixe it up with
Clones+lasso+ dragon+Bazzoka
Where the clones distract a big mess of grim into an open space. The lasso pulls the original Serin away at the last minute. Dragon freezes them in place. Then we blow them up with a bazooka.
We can most likely do,
Sniper+Big Gun+Bo staff+blade arms
Where Smokey and Billy take care of the long and mid-range defenses while Mikado and Serin take close range.
How well will Billy get along with:
Smokey?
When she finds out that short jokes rile him up and make him angry, she might playfully hide short jokes in her day to day conversations with him. Just to see if he gets them.
Mikado?
She likes being quiet around quiet people. And she loves animals so she's going to play with his semblance constantly.
Serin?
Billy won't like that he organizes everything, but she will put up with it. She will quietly listen in on his conversations with himself though, and maybe make comments here and there if it's interesting.