Slade's Protege

What would happen if Dick and Danny were identical twin bothers? What if Danny was born a halfa? And what would happen if Danny was taken by slade when he was 3, leaving Dick to handle their parents death by himself?

(The full bat family is included in this cross over though ages will be mixed up a bit and the times they've become the heroes they are. it's my first actual story so I'd appreciate it if ya didn't mind a few errors lol also I'm somewhat new to the fandoms. One more thing is I'm in the process of finding a cover photo, so it won't always be purple lol. Oh quickly to avoid copyright I DO NOT own the characters! They belong their rightfully creators(their respected show/movie creators), I'm just using them to make a story lol

Ages:
Bruce: 45
Alfred: Immortal (XD)
Slade: 47
Jason: 19
Tim: 17
Richard/Dick: 14
Danny: 14
Damian/Demon: 9

(Any other characters will be added as they appear)