Responses
His back story as told in the Novel state that he was born with the innocence and that is why his parents abandon him.
As to whether or not Red has any connection with Allen, I'd say he doesn't. Cause all the details in the story up until now indicate that he doesn't have any connection with Allen. He's simply a by standard that got swept into this conflict. Cross himself even said so when he decide to put Nea inside Red.
allen isn’t allen bc he’s named after the dog, he’s not “red” either bc it’s just a nickname. we still don’t know what makes him diffevent or why he has that arm, oh geez i didn’t realize we still know so little about him & the 14th lmao