Bat-Mite

Real name: unpronounceable
First appearance: Detective Comics vol. 1 #267

Other media: coming soon

Robin/Red Hood

Real name: Jason Todd
First appearance: (as Jason Todd) Batman vol. 1 #357 / (as Robin) Batman vol. 1 #368 / (as Red Hood) Batman vol. 1 #635

Other media: coming soon

Ace the Bat-Hound

Real name: Ace
First appearance: Batman vol. 1 #92

Other media: coming soon

Robin (Tim Drake)

Real name: Timothy "Tim" Drake
First appearance: (as Tim Drake) Batman vol. 1 #436 / (as Robin) Batman vol. 1 #442

Other media: coming soon

Batgirl/Oracle

Real name: Barbara Gordon
First appearance: (as Batgirl) Detective Comics vol. 1 #359 / (as Oracle) Suicide Squad vol. 1 #23

Other media: coming soon

Robin/Nightwing/Batman

Real name: Richard "Dick" Grayson
First Appearance: (as Robin) Detective Comics vol. 1 #38 / (as Nightwing) Tales of the Teen Titans vol. 1 #44 / (as Batman {Hallucination}) Batman vol. 1 #119 ; (Imaginary) Batman vol. 1 #131

Other media: coming soon

Batman (Bruce Wayne)

Real name: Bruce Wayne
First Appearance: Detective Comics vol. 1 #27


Other media: coming soon!!!