Grouchy Smurf (original French name Le Schtroumpf Grognon) is one of the main characters of the Smurfs comic books and the Smurfs cartoon show, who has appeared on the show throughout its entire run.
He is usually considered a sourpuss since he barely says anything except what he hates. His catchphrase throughout the entire show is "I hate (insert whatever the last person said)." Most of the time, it's all he says throughout the whole show. And he is also known as gruff, responsible, organized, understanding, courageous, hard-boiled, protective, self-absorbed, mean, uncompromising, rebellious, feisty, good-hearted, rational, observant, upbeat (sometimes), caring, hateful, negative, shrewd, mild-mannered, uptight, realistic and friendly (sometimes).