This Mort is full of Heart
Deathbolt was a flunky of the Ultra-Humanite, who performed nefarious experiments on him until his body became a living electrical battery. He is a mort in the truest sense of the word, as he has only been seen in a handful of appearances (most notably the aforementioned Crisis of Infinite Earths), and has seemingly dropped out of existence.
Alright, here is our new mort. He is Marvel, if that peaks Eric or Joanna's interest.