May 2015

If injuries don't heal, then how come Tavros' ghost could walk?

He had robot legs before he died so that may have carried over to the after life.

Was it explained as to why Dave's Bro was trying to initiate the Scratch?

Possibly because he knew the session was going wrong when he saw that Jack Noir got the queen’s ring. 

What happened to the Condesce in Pre-Scratch Earth?

She left