Batman is loved by many, but, I feel that having more bat-like characters would be a good idea. Even though it would probably take close to ten movies to set just the core members up. It looks like Batman v. Superman: Dawn of justice will be introducing that Jason Todds Robin has already been killed. That being said Jason Todd was the second Robin and was killed by the joker, but, then brought back to life and became The Red Hood, Gathams greatest marksman. lets just start with him in naming all the core members of the Bat-Family.
Jason was a troubled boy who tried to steal the wheels off of the bat-mobile. Bat-man saw more in this child and took him under his wing (no pun intended) and trained him to become the second Robin. Jason was later captured and killed by the Joker. He was brought back to life and took on the mantel of The Red Hood. he has a love hate relationship with Bat-man, but, he will still help out if he needs too.
Dick Grayson was the first Robin, and latter become Nightwing and even Bat-man for some time. Dick's parents were known in the circus as the Flying Graysons. But, the man in charge of the circus got in trouble with a gang, and to show they mean business, they killed Dick's parents right in front of him. Bat-man showed sympathy to young Dick, and took him in, trained him to become Robin, and The Boy Wonder was created. He eventually had a downfall with Bat-man and left his job as Robin, and become his own hero Nightwing.
Tim Drake was a boy who grew up in the same wealth class as Bruce Wayne. He started studying Bat-man and learned his incredible detective skills, and even figured out Bat-man and Nightwings secret identities. He found that Bat-man was growing reckless after what happened to Jason Todd. so, he decided to confront him, in return he was trained and became the third Robin. He then became to old a decided to go on his own, becoming Red Robin and now leads the Teen-Titans.
Talia Al Gul tricked Bruce into having a child with her, she then sometime had the baby and trained him in the league of Assassins. He was then dropped off at Wayne Manor, and with some help, he became the forth Robin.
Barbra's father is the police commissioner of Gatham, he has no idea that she is Bat-girl. For some time Barbra was crippled by the Joker, and operated at Orical, someone who would help Bat-man figure out problems. But got spinal surgery and became Bat-girl once again. She has had a relationship with Nightwing, but, it ended sadly.
Kathy Kane was a wealthy business woman who used to be a acrobat, she used her skills to become a crime fighter. Bat-woman was meant to become a love interest to Bat-man, but, that didn't work out. She was later inducted into the Bat-Family and helps out whenever she can.
Bruce was born into a billion dollar company, with everything his heart desires. Then he had to watch his parents get shot and killed right before his eyes. From there he starting devoting his life to bringing justice to those who deserve it. Even though he is human, Batman has been able to strike fear into the eyes of almost every bad guy he encounters. He is considered one of, if not best detective in the whole D.C. universe, and a master in a variety of martial arts. With a unstoppable need to save the Innocent, a whole Bat-family and the Lustice league, and billions of dollars at his disposal, Batman is truly not one to mess with.
Now, I'm not saying we need this many people, we would only really need the core members. batman has become such a big part of the movies now a days, I think the movie industries would make a lot more money. Well this was really more of an evaluation on the core members of the Bat family, if you would like me to go over the members that aren't core members then comment.