A pleasant introduction to one of DC Comics most beloved heroes, an origin story well adapted and finely crafted in terms of its animation. I find most DC films from its animated universe to be of top-quality, and this effort is no less. Perhaps it doesn't fully share the spectacularity of Justice League films or the grandeur of Superman, or the somberness of Batman, but it feels rather cosmic in its nature, it takes on an astronomical dimension obviously due to Green Lantern's stories mostly taking place in outer space. To me is utterly satisfying when a hero and their stories develop an atmosphere of their own, and are able to produce a sense of warming familiarity when you are watching.
Make sure you watch this, if you don't know the first thing about Hal Jordan's Green Lantern, definitely check this movie out, and even if you do you'll realize what a fine origin story WB has in store for fans.