I'm still rather new to the exorcist profession, but... I'll try?

Innocence is what we call a special material that grants certain people the power to destroy akuma-- which, as I've said before, are human souls trapped in mechanical bodies whose one sole duty is to kill and cause destruction. If a person is Innocence-compatible, like I was with my clock, they can command the power that the Innocence has. And no piece of Innocence is the same. It can make a person very fast or rewind time or... make hammers grow.

As for my friends, I'm not sure. I just got here and it seems Rabi was the same, but I think Allen and Linali have been here longer...