Leily is actually a witch, and these are her sisters, who are also witches. Not only is Leily the second-youngest (Energy Witch is younger), her magic is also the weakest.

Also, I might switch Heat Witch and Energy Witch's names around.

In terms of what I have in personality at the moment, Heat's a total bitch, Cold's indifferent to things, and Energy is playing sports and hanging out with friends all the time. Leily just seems the good in things, and has what I call "near-Spongebob" levels of optimism. Make of that what you will.

Oh, and here's how Heat, Cold, and Energy looked like back when they were "Mistresses"...

Heat: https://mdetector5ive.deviantart.co.....olor-381788689
Cold: https://mdetector5ive.deviantart.co.....oler-381790565
Energy: https://mdetector5ive.deviantart.co.....ress-383149778