Character Name: Sir Johan (also Sir John)
Sir Johan (also called Johan, pronounced yoh-hahn) is a character that appears in various episodes of the Smurfs cartoon show, usually in the "Adventures Of Sir Johan And Peewit" stories, as well as in the "non-canonical" Smurf story "The Smurfs And The Magic Flute", where he is called Sir John. He is a teenage knight who serves to protect his king and his kingdom from various kinds of threats. He has befriended a young boy named Peewit who has become his constant companion in his adventures. He rides around on a white horse.
His character in the cartoon show was voiced by Michael Bell.