Mckayla Sculder or Kayla for short, Kayla is Blake's "friend" it's clear she wants to be more than that with blake but he doesn't know how to respond to that, they met in a mall while dark cosmos was taking blake shopping, Kayla is a goth girl she likes the occult and demonic and things of that nature she likes kage even if he's suspicious of her.
Kayla white knuckled her way into being Blake's girlfriend and they're surprisingly happy.
Kayla's elemental power is bones she can summon and create bones anywhere she needs forming them into weapons traps and other things.