test tube baby Damian but its also Jason meeting Damian as a baby at the league. kinda like Shadow and Maria from sonic but if Maria died before befriending Shadow
Jason came back from the dead without any kind of help or aid from supernatural/mutant forces. i like to believe that when Talia adopted him Ra’s was just like. ‘ok fine he can be my grandson but only if i can use him for my immortality research’ and Jason has literally been to hell and back; tortured, murdered, dug up through his own grave, pit-washed to give him back his sentience,
basically at that point in his life he was tired enough of Everything that he was able to look Ra’s in the eye and be like ‘fuck it man idk do whatever, as long as the medical table has a nice pillow on it i don’t care’
so Jason is settling into his life at the league, splitting his time between training, following around Ra’s to annoy him, or hanging around down at the league labs to help figure out why he got revived (they never figure it out and it brings Jason great amusement), until one day he’s exploring while they wait for a blood test to come back and he finds a sector of the labs that he’s never been in. inside is a massive glass test tube. inside the test tube is a toddler’s body.
“What the fuck is that?” He asks, casually, to the league member working nearby.
“The Demon’s daughter’s child,” The woman replies, slightly confused sounding. “Are you not aware of him? Your DNA has been used in his development, so I thought you would have been informed and introduced.”
Jason takes this in, turning back to the encased toddler. He hums calmly.
“Huh, ok.” And then, a moment later, he turns to the door. “TALIA WHAT THE FUCK-“
it turns out that Talia was in the middle of creating herself a son and Ra’s a new vessel before she’d taken in Jason, and then upon Ra’s begrudgingly taking on Jason as a grandchild instead, ‘Damian’ had kind of been put on the back burner. They were still curious about potential abilities Jason possessed, however, so as a test they infused his DNA with Damian’s to see if it would change anything in his body, as a way to figure out what could be different about Jason. spoiler alert: nothing changed, except now Jason’s biologically related to this kid, just like, apparently, Bruce fucking Wayne.
“Whore.” He diagnosed when he found out, staring right at Talia’s unimpressed face. “Do you know how fucked up that is?! A man AND his adopted son?! What kind of fucked up hypothetical three-way would have caused this!?”
“Jason,” Talia snaps. “Don’t be gross. My father is happy with you now anyway; or at least he’s happy with your power and skills as a fighter. Maybe not the personality as much. Regardless, we no longer have need for Damian, so it is of no harm.”
“NO HARM?!” Jason yells, loud enough that the squad of assassins running through drills on the other side of the courtyard pause to stare in caution. “HE’S IN A BIG SYRINGE OF LIQUID VASELINE!” He puts his hands on his hips, jutting out his head confidently. “You can’t be an absent mother just because he hasn’t left the test tube—that cop out doesn’t work. Wake him up.”
“Jason, I’m not going to-“
“No, no- my seventeenth birthday is in a week. You said that because of how well my tutors said I was doing that I could pick a gift to receive. Well, I’ve picked. I want him.”
Talia stares at him. “You want me to wake up your lab-created throw-away brother as a birthday gift?”
“No need to gift wrap him. Well,” He amends quickly, giving a half-shrug.” “I mean- give him some clothes.”
“Sometimes, Jason,” Talia murmurs to herself, kneading her forehead tiredly. “Sometimes I think maybe the lazarus pit’s abilities were wasted on you.”
Ra’s doesn’t find out about the birthday gift until two months later, when he finally notices that Jason isn’t the only person sneaking into his private chambers to eat lunch and complain about this one specific horse who keeps trying to kick him in the stables.
“Why does my irritating shadow,” He asks his personal guard, eyeing the two sat on his desk and blinking at him like a pair of inquisitive owls. “Have another irritating shadow?”
“…That’s Damian, Sir.” His guard tells him. “Your other grandson.”
Ra’s stares at the younger one. “I thought we threw that idea out?”
“I’m a birthday gift.” Damian explains, voice deadpan. Ra’s takes this in, humming blankly. Damian holds out his hand. “Pleasure to meet you, grandfather.”
Gingerly, Ra’s accepts the handshake, facial expression showing the slight disgust he felt at the action. “…I see. Pleased to make your acquaintance… grandchild number two.”
“Good, good,” Jason approved, turning to look down at Damian. “Now tell him he has a receding hairline.”