- You may also be looking for the 1981 cartoon episode by this name
Supersmurf is a character that appeared in the episode "Supersmurf" and his costume appeared in "My Smurf The Hero".
In the 1980s series, he is Brainy Smurf, a less-than-mild-mannered Smurf intellectual not working for a great metropolitan newspaper, who decided to use a spell from one of Papa Smurf's books that would give him super-strength, super-speed, and the ability to fly in order to rescue his village's food supply from Bigmouth the ogre when he took it upon one of his visits to the village. Though Brainy was able to give the ogre a good thrashing with his newfound superpowers, they only lasted for about 2 hours, after which he reverted back to having normal Smurf abilities.
There's another Supersmurf in the comics, who got the same powers from a fairy named Cloclo, but this Supersmurf is just a minor character who appears in one of the "3 Smurf Stories" albums.
In the 2021 cartoon show episode "My Smurf The Hero", Scaredy Smurf is tired of being scared and asks Handy Smurf to create him a superhero costume and goes by the name Supersmurf. However, he does not take his new job properly and wreaks havoc among the village. He becomes a real hero when he defeats Bigmouth.