warning for gore!!! but erm actually i want to see the horrors of bruce finding his fifteen year old son, 4'6 and barely 90 pounds, under the rubble of the blown up warehouse in the most terrifying way possible.
so instead of how we see it in canon, bruce moves that piece of rubble off of his son and just sees... absolutely nothing recognizable.
his baby's skull is beaten in, head caved in on from the right side. his face is lopsided from the brute force of the crowbar repeatedly smashing his cheeks, jaw, and forehead. what's left of his little boy's face is contorted into an expression so horrified-- jaw hanging off the hinges and eyes bulging from its withering sockets-- that bruce lets out a scream of a possessed man.
jay's feet are completely shattered, hanging loosely from his broken ankles. his legs are in different directions-- right knee detached from its socket. there are rips in his child's torso, revealing bones and guts, from the sharp part of the crowbar sinking into his skin and tearing.
the explosion burned his entire body, burning the skin off his chest and back and little fingers. his hair, oh his baby's little curls, have been singed off with only a few remaining strands.
jason no longer looked like bruce's sweet little jay baby-- his happy boy who smiled and giggled, and whose dimples would make a home in his flushed cheeks, and whose blue eyes sparkled when he laughed.
the detective at the scene of the crime chooses not to ask bruce wayne if he was certain this body belonged to his son.