You is the name of a character on Blue's Clues, situated and addressed to as a part of the fourth wall. On occasion, You is classified as the voice of several children. Steve and Joe, among other characters, talk to You throughout most episodes through the TV screen. You are the viewer and the most important character. You were once even a clue.
Appearances
The character of You has appeared in every episode on Blue's Clues. You are not an official character, though; when Steve says "You" he is usually referring to the children at home watching the show.