← Previous Next → 9x01 Justin Bieber pranks celebrity friends: Taylor Swift, Rob Dyrdek and Sean Kingston 3.33/5 (3 votes) First Aired: Mar. 29, 2012 on MTV Summary: Justin Bieber is the guest host in the Season 9 opener, which finds the teen pop star pranking pals Taylor Swift, Rob Dyrdek and Sean Kingston.

Series Main Characters

• Himself - …
• Field Agen…
• Field Agent
• Field Agen…
• Wilmer Val…

Guest Stars Himself - Guest Host played by Justin Bieber Field Agent played by Michael Blaustein Field Agent played by Anne Gregory (II) Field Agent played by Daryl J. Johnson Field Agent played by Adam Lustick Field Agent played by Andrew Santino Swimming Wedding Guest played by Audi Resendez Himself played by Rob Dyrdek Herself played by Miley Cyrus Himself played by Ryan Good (II) Field Agent played by Barry Rothbart Himself played by Chris Pfaff Himself - Punk'd Co-Creator played by Jason Goldberg Himself played by Sean Kingston Herself played by Taylor Swift More