Running
The ability to run is the fifth and last power that Rayman is granted by Betilla the Fairy in the original game, at the end of Mr Stone's Peaks. Running allows him to move faster but also to jump and helicopter further. Since the button which must be held in order to run is the same button which muct be pressed in order to pull a grimace, Rayman essentially loses the latter ability once he is able to run, but this has no in-game effects other than no longer being able to scare Livingstones.
Things are going to get really wild from now on, Rayman. You'll have to be very quick.Now you can run faster. To run, press O while walking.
Running is one of the basic abilities available to all characters from the beginning of Rayman Origins. In this game it is augmented by additional powers, such as the ability to run up walls and jump off them.