Trivia relating to Sly Cooper.
- Sly Cooper bears a striking resemblance to Jojo the Raccoon from Sucker Punch's first title Rocket: Robot on Wheels.
- Sly's signature color is blue. Unlike Bentley and Murray (and most characters), his is not based off his skin (or fur) but off of his attire.
- However, most of his attack auras are golden yellow, Carmelita's signature color.
- Sly wears an actual mask over his mask-like fur around his eyes.
- Concepts shown in a "making of" movie in Sly Cooper and the Thievius Raccoonus show that Sly's early designs ranged from him wearing nothing more than his hat and shoes to even being chubby.
- Sly Cooper won "Best New Character" at the Game Developer's Conference for 2002 and the Best Stealth Character by DragonAx for 2011.
- Sly is of multi-racial descent (English, Scottish, Middle Eastern, Egyptian, and Japanese in particular) based on his ancestry.
- Sucker Punch originally planned Sly's name to be JT, not Sly, accompanied with a different voice actor. This can be found in in the " The Evolution of Sly" bonus video on Sly 3.
- Sly, Bentley, and Murray, in contrast to their real life species, can't swim, because they never learned how to when they were in the orphanage. In Sly Cooper and the Thievius Raccoonus, you can get a page from the Thievius Raccoonus that lets you recover from falling into water. This does not carry over to the second and third games, but collecting Sir Raleigh's Frog Hat from the safe in episode 4 of Thieves in Time gives the ability to every playable character.
- Sly uses two signatures throughout the series; in Sly 2 when he sends Carmelita some post cards he uses a capital S as his signature, but other times he uses his whole first name.
- Sly's last name, "Cooper", can mean "barrel-maker" in the English language. This is possibly a reference to how, in the first two games, Sly is able to hide in barrels to avoid being seen by his enemies.
- During cutscenes in Sly Cooper and the Thievius Raccoonus, Sly appears to have entirely yellow gloves and black shoes, although during gameplay, Sly goes back to his blue gloves and shoes.
- In Sly Cooper: Thieves in Time, there is a Sanzaru logo on Sly's backpack. Also, in one of Sly's parachutes.
- Sly is actually three years younger than Carmelita.
- In the Thieves in Time episode "Turning Japanese", Sly passes himself off as "Major Muggshot", one of the Fiendish Five.
- Sly's athletic abilities prove to be valuable in rare occasions in some missions, despite the doubts of few other characters, such as Bentley; for instance, in the fourth game during the second part of the Grand Key Larceny mission.
- In Japanese, Sly was voiced by Tomokazu Seki in the first two games. Takeshi Kusao eventually takes over as of the 3rd game and in his appearance in the Japanese dub of Playstation All-Stars Battle Royale, as well as rerecording Sly's dialogue in the Japanese version of Sly Cooper Collection.