Blue is the protagonist of Blue's Clues and the only character to appear in every episode of the series and its spin-off, Blue's Room.
Blue is always excited to have the viewers come over to help Steve figure out what she wants by leaving a pawprint on 3 objects better known as Blue's Clues. Blue is a quick learner, always ready to be taught new things. She was born on a farm in a book called "About a Puppy" but skidooed out of it.
Blue is a blue puppy with darker blue spots and a dark blue nose. Her eyes are white with black pupils. When Blue opens her mouth, her tongue is pink. She has big, floppy ears.
Blue appears in every episode of both Blue's Clues and Blue's Room. Her first appearance was in Blue Prints. Her last was in Music Stars.
Blue was conceived in a tall building in New York City in Times Square by three college graduates.
Blue was originally going to be a male cat colored orange.
The voice for Blue is one of the series' creators.