Sir Bartleby MontClair of Dresdin is a character that appears in Sonic Underground. He is a posh aristocratic mink and one of the richest civilians of Robotropolis.
- Anthropomorhic: Mink
- Age: 18
- Alignment: Good/Neutral
- Allies: Sonic, Manic, Sonia
- Enemies: Sonic (sometimes), Manic (sometimes), Dr. Robotnik, Sleet and Dingo
- Likes: Sonia, Sonic, Manic, Being rich, Artifacts, Paintings, Rosebud tea
- Dislikes: Sonia risking her life as a Freedom Fighter, Dr. Robotnik