Prof. Colby Turner is one of the pre-made NPC psychology professors in Sim State University from The Sims 2: University. He can be made playable by befriending and asking him to move in, or by marrying him. Colby has the same facial structure as Christopher Bui.
His name is randomized when Sim State University is generated. The name "Prof. Colby Turner" is only referenced in the game files.