(Note: lime, kapo, Sebastian and Kaiz are teenagers, not kids)
Also here's a quick character introduction
This is lime (before and after mutation)
This Is kaiz, he can transform into a blue and yellow wisp whenever he wants to.
This is aikko, she can transform into a blue and yellow pseudo shork whenever she wants to.
This is kapo (after death)
I didn't draw his alive form but in the alive form he's less lighter and he has blue eyes.