Kuno Becomes a Marianne!

Kuno Becomes a Marianne! (マリアンヌになった九能) is the 22nd episode of the fourth season, Outta Control, and the 86th overall episode.

Trivia
At first, Azusa calls the panda hat she steals from the biker "Silvie" and the emergency light she steals from the ambulance "George". But after the ambulance leaves and she's nuzzling them both, the names switch.