This is Clumsy Smurf, the dimwitted smurf and the main protagonist of the Smurfs.
And these are the heroes who are similar to him:
Goofy (Disney Universe)
The Cowardly Lion (The Wizard of Oz)
Ash Ketchum (Pokemon)
Shaggy Rogers (Scooby Doo)
Scooby Doo
Thomas the Tank Engine (Thomas and Friends)
Percy the Small Engine (Thomas and Friends)
Toad (Super Mario series)