Ep 1. Super Zero / Sickly Sweet

Billy and Mandy, the two best friends from Endsville are back with the fourth season of "The Grim Adventures of Billy and Mandy". In season 4 episode 1, titled "Super Zero / Sickly Sweet", we see the duo exploring different sides of their characters.

In the first half of the episode, "Super Zero", Billy and Mandy discover an old superhero comic book in Grim's attic and decide to have some fun by becoming superheroes themselves. Billy, already sporting a bizarre and flamboyant costume, takes on the identity of "Super Billy" while Mandy, as usual, uses her cool expertise to become "Mandy the Merciless". Things are looking good until they realize they have no actual powers or adversaries to fight against.

But their luck soon seems to take a turn when they see a group of robot dinosaurs threatening the city. Thinking of this as an opportunity to show off their newly acquired superhero skills, Billy and Mandy jump into action. But as the battle progresses, they begin to realize that maybe they weren't cut out for the superhero role after all. The two are soon forced to deal with the consequences of their overreaching and the mishaps that befall them turn the episode into a hilarious and chaotic mess.

In the second half of the episode, "Sickly Sweet", Mandy comes down with a cold and ends up staying home while Billy goes to school. Things start to go awry when Mandy realizes that she's not sick with a normal cold. Instead, a strange and unpleasant sort of candy addiction is taking over her body and turning her into a manic candy-eating machine. Meanwhile, Billy has his own problems to deal with. After threatening his teacher with a makeshift bomb, Billy's punishment is to attend a "special" class, where he meets other troublemakers and hatches a plan to escape.

The two stories weave seamlessly together, ultimately culminating in a chaotic yet satisfying conclusion. The humor in this episode is quirky and unique, catering to both the adults and the children in the audience. The characters are well developed and their traits perfectly contrast each other to create a balanced and fun dynamic. The show's animation is as vibrant and eye-catching as ever, always keeping the viewer engaged.

Overall, "Super Zero/ Sickly Sweet" is a perfect example of the clever writing and zany humor that make "The Grim Adventures of Billy and Mandy" one of the best cartoons of its time. Through its new adventures every episode, it continues to connect with its audience and deliver laughter, fun, and excitement. It’s a must-watch season opener for fans of the show and those who are new to it alike.