Justice League is an American animated television series which ran from 2001 to 2004 on Cartoon Network. It is the seventh series of the DC Animated Universe. The show was produced by Warner Bros. Animation. It is based on the Justice League of America and associated comic book characters published by DC Comics.
It serves as a prequel to Batman Beyond and as a sequel to Batman The Animated Series, Superman: The Animated Series, and The New Batman Adventures. The series ended after two seasons, but was followed by Justice League Anime Unlimited, a successor series which aired for three seasons.
It was the first show on Cartoon Network to be produced by Warner Bros. Animation, and was the last Cartoon Network show to be greenlit by Betty Cohen.
Bruce Timm, who co-produced Batman The Animated Series and Superman: The Animated Series in the 1990s, became producer on an animated series focusing on the Justice League. The roster consisted of Batman, Superman, Wonder Woman, Green Lantern , The Flash, Martian Manhunter , and Hawkgirl.
According to audio commentary on the DVD release of Season 2, the second-season finale “Starcrossed” was expected to be the final episode of the series. However, in February 2004, Cartoon Network announced a follow-up series, Justice League Unlimited, which premiered on July 31, 2004 and featured a larger roster of characters.
It’s the first series in the DC Animated Universe to fully use digital ink and paint, also the first to be produced in widescreen starting in Season 2.
Kevin Conroy reprised his voice role as Batman from Batman: The Animated Series , The New Batman Adventures , and Batman Beyond . Batman’s costume was redesigned, but this time, his costume was a combination of his last three costumes. The same costume from The New Batman Adventures is retained, but with the blue highlights from the Batman: The Animated Series costume and the long-ears from the Batman Beyond costume are added to the costume. Tim Daly, who voiced Superman in Superman.
The Animated Series was initially involved but was unable to continue his role due to involvement with The Fugitive a short-lived remake of the original 1963 TV series and was replaced by George Newbern. Superman was initially redesigned to have a bit of a squint to his eyes and slight wrinkles that was also meant to make him look older, in anime porn addition to having a noticeable shining streak to his hair; he was redesigned to appear larger in physical girth than in the previous series.
Fans did not like the older appearance and in the second season the streak was toned down to the point of almost disappearing and the squint was removed, in essence reverting Superman to his earlier animated look. As an in-joke, Superman’s season one facial designs are used for an older Jor-El in the Justice League Hentai Unlimited episode For the Man Who Has Everything. Superman’s powers were also toned down and he was portrayed as significantly weak in the first season, some episodes showing him being consistently taken down by foes he should not have a problem with. This was changed from the second season onwards, where his power-levels were upped.