He hates that you're better than him, that's it, he hates you for that, you're supposed to be his new "brother", but he hates your guts, why did Bruce adopt an idiot like you? The worst thing is that you're damn talented and he hates you for it.

He was raised to be a deadly weapon, and you? You were just a stray dog, and yet you are flexible, agile, tall, thin, your jokes make even Jason laugh, how the hell?!.

"I hate you."

I hear him say under his breath, well, you're next to him, casually watching a movie, but he can't contain his venom.