Kung Fu Panda: Legends of Awesomeness (series)

"Fluttering Finger Mindslip" Season 1 episode 5
Po masters a technique where he can flutter his fingers in front of the eyes of someone it will hypnotize them and places them in a trance for a moment where they loose all train of thought and immediately snap out of it with post hypnosis amnesia in a daze and mind foggy forgetting what had just occurred moments prior to being hypnotized often considering what Po tells them as the truth. Po eventually abuses the move and repeatedly hypnotizes them and they lose their memory of him. after being kicking their friend out with a harsh beating Tigress, Monkey, Crane, Viper, Mantis notice that don't recognize each other nor remember themselves.