I’m not entirely sure what’s going on here. The other Sasori and Stray Cat films are available, but they require a Fandor subscription to watch. Not sure why some would be available without a Fandor subscription.
One crystal clear night when patrol was about to start, Jason whistled and signaled at Damian to come with him like his little brother was a freaking dog, then stole the Batmobile. The two of them bonded a bit over beating up bad guys, until the end of patrol, when he took Dami to arkham. Damian sat on the roof as Jason did something in the back, when he was done he started singing. Into a microphone. It was so loud the entirety of arkham could hear it. It took a while but he got Damian to sing some ‘jailhouse rock’ with him, the rest of the night they sang to arkham and screamed when they heard shouts of 'shut up’ and 'please leave!’ (Occasionally Harley’s cheers too) their misery fuels them, Damian’s never been so happy than to bond and sing with Jason, it gets his anger out and he gets to have so much fun bouncing around.
Steph found out about the late-night singing. She’s the only one who knows, so she joined in, naturally. They call themselves 'the dead robins club.’