Over several years of operating as a superhero, Batman has built up a reliable network of crimefighters that can help him stand against some of Gotham City's most dangerous criminals. The group is officially known as the Gotham Knights, but fans typically call them the Bat-Family. Each of them has received extensive training to allow them to operate in one of the most dangerous cities on Earth.
Source：https://www.cbr.com/batman-bat-family-height/
