"Tobias Gregson - The Great Detective's Great Foe" is the character theme of Tobias Gregson in The Great Ace Attorney: Adventures, the title referencing his rivalry with Herlock Sholmes. It is used in The Great Ace Attorney 2: Resolve for the same purpose.
It also plays for the elderly policeman in The Return of the Great Departed Soul. As such, it can be considered the theme of Scotland Yard as a whole.