Carmelita has not kept the same English voice actress for more than one game in the series. As such, her accent keeps changing each game.
Contributed by gamemaster1991
Tennessee "Kid" Cooper's design has slightly changed throughout the series. In Sly Cooper and the Thievius Raccoonus, he is depicted wearing a long sleeved shirt under his vest. Later Sly games removed the shirt, but it was re-added in Sly Cooper: Thieves in Time.
Contributed by SRJ