One of the most underrated animated cartoons of the early 2000’s is Kids WB’s Legion Of Superheroes In The 31st Century, I was already a huge fan before this show was aired, season 1 was a great intro to the Legionaries and their universe, and the DC Legion of superheroes comic series based on the animated series was a great expanded look of their lesser characters and universe, in issue 6 it features the green lantern core of the 31st century known as the teen lanterns and in issue 19 booster gold makes an appearance. Season 2 of the animated series steps up its game and delivers an amazing action adventure series unlike the legionaries had never faced. It is ashamed that series only lasted for two seasons and it is forgotten gem, however you can now enjoy the entire series with your family on Blu-ray.
https://www.blu-ray.com/movies/Legion-of-Super-Heroes-The-Complete-Series-Blu-ray/271309/