Terry McGinnis (Batman Beyond)
Now, let’s return to that comment from Marc Guggenheim. Many famous DC characters started life outside the comics. One of the most notable is Harley Quinn, and while we’re pretty certain that the Joker’s girlfriend is not about to join Legends of Tomorrow, how about another creation of the DC Animated Universe?
In fan favourite series Batman Beyond, an elderly Bruce Wayne trained up young tearaway Terry McGinnis to inherit the mantle of the Batman and protect a futuristic, but still just as corrupt, Gotham City. As we’ve discussed before, Terry would be a terrific addition to the Arrowverse. Let’s face it, we’re never going to see Bruce Wayne pop up on The CW, but having Terry around would allude to his existence in that universe.
More importantly, Terry is an awesome character in his own right. An episode where the Waverider crew travel to the cyberpunk Gotham City of the future could be a real highlight of the series.