Do you think Cronus’s scars were originally there from birth because his post-scratch version is DUALSCAR or did he just injure his forehead? Or another possibility: Someone injured his forehead just like Voldemort did to Harry Potter?

Cronus’ Dual Scars are a big reference to Harry Potter, Aranea even outright tells us that he says a Powerful Wizard tried to kill him when he was little and left him with those scars! But indeed, for him and Dualscar to have the exact same set of scars? Here’s my headcanon:

Karkat dropped Cronus as a grub and he smacked his little grub head on some sharp bit of metal on the meteor.

This is most definitely not 100% canon but, come on, wouldn’t that make sense? If both Pre and Post Scratch Versions have the same scar, chances are the scar happened before being sent through the meteors.

Then again.

There is a Dad Crocker and a Dad Egbert that are exactly the same. So it doesn’t even necessarily imply the scars HAD to happen before the Reckoning.