Still Human

Five kids are taken in by the military for experiments. They struggle with the tests they go through but they still manage to be human even if they slowly start to look even less human as time goes on.

Cash can turn into animals or just gain abilities of animals but struggles to cope with it.
Lilith can see and talk to the dead but is also haunted by those she upsets.
Brook can use the elements but struggles to control them and is used for powering up machines.
Amber sings, dances, and acts until she falls off stage or until her legs and voice give out.
Alex builds and invents new weapons and products until his final screw.

They may have powers and abilities a normal person may not have but they are still kids and human.