In Batman #66 (June 1951), Dick Grayson dreams he has grown up and taken over the mantle of Batman II. He also dreams that he has a son, named Dick Jr, and trains him as the new Robin.
482 – Batman II and Robin Jr
In Batman #66 (June 1951), Dick Grayson dreams he has grown up and taken over the mantle of Batman II. He also dreams that he has a son, named Dick Jr, and trains him as the new Robin.