Are you looking for serious or funny characters?
I think Dick, Damian and Tim as well as Jason all have reasons for Batman taking them under his wing. Dick lost his parents, Jason grew up on the streets, Tim figured out his secret identity and thought that Batman needed robin, and Damian is his son and they have had some great moments as father and son like thisSidekicks are awesome, You can have them and still be grounded, young justice proved that.Sure, but they are not suitable for a superhero like Batman. I mean, the guy does his best to hide his identity from others in order to shield them from harm, but has no quarrel with training children and participating in suicide missions with them. Yeah, you could say that my version of Batman revealed his identity to his wifey and that I'm just being a hypocrite, but the point here is that Wayne's marriage was supposed to be the top of the mountain. It's kinda like what would happen if Christopher Nolan's Bruce Wayne listened to Alfred at the beginning of The Dark Knight Rises and simply settled down, but didn't fully give up his alter ego.

In my mind, I've designed Robin to be related to Batman, but not Bruce Wayne. He's also trained by Natas, and they frequently work together, but he's not his homoerotic sidekick - they don't share the same roof. So, Catman's implication that he was cuffed by Batman and his family of superheroes could as well be a snide remark and still valid. I have steered away from the whole sidekick sub stories because I find them not very fit for characters like Batman and Deathstroke, even more so taking into account this RP is supposed to be grittier and more grounded.Sidekicks are awesome, You can have them and still be grounded, young justice proved that.
I am aware of the change in the roster in the comics and I didn't agree with it. Suicide Squad in my opinion was a way of giving unknown villains a chance to shine. Deathstroke, Reverse Flash and Black Manta have too much popularity to not make it weirdI hope this doesn't seem like a complaint, but it feels weird having Deathstroke and Reverse Flash on the Suicide Squad. What I mean is that the Squad is usually made up of villains who no one really knows, I think Harley Quinn and Captain Boomerang were the most well known members of the Squad and they weren't on the same level as the other villains of the flash and Batman. It's strange seeing a list villains on the SquadActually both have been part of the squad before, with Reverse Flash actually being on the current roster! Deathstroke was also a member of the same squad although he left the next issue after turning on everyone but hey ho! I see what you mean about the well known supervillains and I believe that was the case for sometime, although strangely Black Manta is also on this new roster so it would seem that they aren't sticking to the rule anymore!