User can explode and reassemble themselves after.

Pros:
-user will not harm themselves
-user can choose who they harm
-user can protect themselves
-user will have a very unique skin pattern
-user can reassemble themselves easily
-user will be stealthy naturally

Cons:
-user will explode when emotional
-user can't control range, heat and light of explosion
-user may lose body parts when reassembling
-user must eat coal
-user can't talk

Weakness: anger
User will cause large explosions when angry and will find it haed to not hurt people.

Image tantrums as a toddler with this quirk. Oh dear god, RIP anyone near them