S01E13: The Mystery
Gumball decides to investigate when his class finds Principal Brown wrapped up in toilet paper, shaved and, covered in green paint, or else face detention.
Previous Episode 
Season 1
The DVD
S1E1 / 03 May 2011
The Responsible
S1E2 / 09 May 2011
The Third
S1E3 / 16 May 2011
The Debt
S1E4 / 16 May 2011
The End
S1E5 / 23 May 2011
The Dress
S1E6 / 23 May 2011
The Quest
S1E7 / 30 May 2011
The Spoon
S1E8 / 30 May 2011
The Pressure
S1E9 / 06 Jun 2011
The Painting
S1E10 / 13 Jun 2011
The Laziest
S1E11 / 20 Jun 2011
The Ghost
S1E12 / 27 Jun 2011
The Mystery
S1E13 / 11 Jul 2011
The Prank
S1E14 / 18 Jul 2011
The Gi
S1E15 / 25 Jul 2011
The Kiss
S1E16 / 01 Aug 2011
The Party
S1E17 / 08 Aug 2011
The Refund
S1E18 / 15 Aug 2011
The Robot
S1E19 / 22 Aug 2011
The Picnic
S1E20 / 29 Aug 2011
The Goons
S1E21 / 05 Sep 2011
The Secret
S1E22 / 26 Sep 2011
The Sock
S1E23 / 03 Oct 2011
The Genius
S1E24 / 10 Oct 2011
The Poltergeist
S1E25 / 17 Oct 2011
The Mustache
S1E26 / 21 Nov 2011
The Date
S1E27 / 28 Nov 2011
The Club
S1E28 / 05 Dec 2011
The Wand
S1E29 / 24 Jan 2012
The Ape
S1E30 / 31 Jan 2012
The Car
S1E31 / 07 Feb 2012
The Curse
S1E32 / 14 Feb 2012
The Microwave
S1E33 / 21 Feb 2012
The Meddler
S1E34 / 28 Feb 2012
The Helmet
S1E35 / 06 Mar 2012
The Fight
S1E36 / 13 Mar 2012
Season 2
The Remote
S2E1 / 07 Aug 2012
The Colossus
S2E2 / 14 Aug 2012
The Knights
S2E3 / 21 Aug 2012
The Fridge
S2E4 / 04 Sep 2012
The Flower
S2E5 / 11 Sep 2012
The Banana
S2E6 / 11 Sep 2012
The Phone
S2E7 / 18 Sep 2012
The Job
S2E8 / 18 Sep 2012
Halloween
S2E9 / 23 Oct 2012
The Treasure
S2E10 / 30 Oct 2012
The Apology
S2E11 / 06 Nov 2012
The Words
S2E12 / 13 Nov 2012
The Skull
S2E13 / 20 Nov 2012
The Bet
S2E14 / 27 Nov 2012
Christmas
S2E15 / 04 Dec 2012
The Watch
S2E16 / 22 Jan 2013
The Bumpkin
S2E17 / 29 Jan 2013
The Flakers
S2E18 / 05 Feb 2013
The Authority
S2E19 / 12 Feb 2013
The Virus
S2E20 / 05 Jun 2013
The Pony
S2E21 / 12 Jun 2013
The Hero
S2E22 / 19 Jun 2013
The Dream
S2E23 / 26 Jun 2013
The Sidekick
S2E24 / 03 Jul 2013
The Photo
S2E25 / 17 Jul 2013
The Tag
S2E26 / 24 Jul 2013
The Storm
S2E27 / 31 Jul 2013
The Lesson
S2E28 / 07 Aug 2013
The Game
S2E29 / 21 Aug 2013
The Limit
S2E30 / 28 Aug 2013
The Voice
S2E31 / 10 Sep 2013
The Promise
S2E32 / 17 Sep 2013
The Castle
S2E33 / 01 Oct 2013
The Boombox
S2E34 / 08 Oct 2013
The Tape
S2E35 / 15 Oct 2013
The Sweaters
S2E36 / 05 Nov 2013
The Internet
S2E37 / 12 Nov 2013
The Plan
S2E38 / 19 Nov 2013
The World
S2E39 / 26 Nov 2013
The Finale
S2E40 / 03 Dec 2013
Season 3
The Kids
S3E1 / 05 Jun 2014
The Fan
S3E2 / 05 Jun 2014
The Coach
S3E3 / 12 Jun 2014
The Joy
S3E4 / 19 Jun 2014
The Puppy
S3E5 / 26 Jun 2014
The Recipe
S3E6 / 03 Jul 2014
The Name
S3E7 / 10 Jul 2014
The Extras
S3E8 / 17 Jul 2014
The Gripes
S3E9 / 24 Jul 2014
The Vacation
S3E10 / 31 Jul 2014
The Fraud
S3E11 / 07 Aug 2014
The Void
S3E12 / 14 Aug 2014
The Boss
S3E13 / 21 Aug 2014
The Move
S3E14 / 28 Aug 2014
The Law
S3E15 / 04 Sep 2014
The Allergy
S3E16 / 11 Sep 2014
The Mothers
S3E17 / 18 Sep 2014
The Password
S3E18 / 25 Sep 2014
The Procrastinators
S3E19 / 02 Oct 2014
The Shell
S3E20 / 09 Oct 2014
The Burden
S3E21 / 16 Oct 2014
The Bros
S3E22 / 23 Oct 2014
The Mirror
S3E23 / 30 Oct 2014
The Man
S3E24 / 30 Oct 2014
The Pizza
S3E25 / 13 Nov 2014
The Lie
S3E26 / 20 Nov 2014
The Butterfly
S3E27 / 08 Jan 2015
The Question
S3E28 / 08 Jan 2015
The Saint
S3E29 / 15 Jan 2015
The Friend
S3E30 / 22 Jan 2015
The Oracle
S3E31 / 29 Jan 2015
The Safety
S3E32 / 05 Feb 2015
The Society
S3E33 / 12 Feb 2015
The Spoiler
S3E34 / 19 Feb 2015
The Countdown
S3E35 / 26 Feb 2015
The Nobody
S3E36 / 05 Mar 2015
The Downer
S3E37 / 05 Apr 2015
The Egg
S3E38 / 05 Apr 2015
The Triangle
S3E39 / 12 Apr 2015
The Money
S3E40 / 12 Apr 2015
Season 4
The Return
S4E1 / 07 Jul 2015
The Nemesis
S4E2 / 10 Jul 2015
The Crew
S4E3 / 13 Aug 2015
The Others
S4E4 / 20 Aug 2015
The Signature
S4E5 / 27 Aug 2015
The Check
S4E6 / 31 Aug 2015
The Pest
S4E7 / 01 Sep 2015
The Sale
S4E8 / 02 Sep 2015
The Gift
S4E9 / 03 Sep 2015
The Parking
S4E10 / 04 Sep 2015
The Routine
S4E11 / 05 Oct 2015
The Upgrade
S4E12 / 06 Oct 2015
The Comic
S4E13 / 07 Oct 2015
The Romantic
S4E14 / 08 Oct 2015
The Uploads
S4E15 / 09 Oct 2015
The Apprentice
S4E16 / 07 Jan 2016
The Hug
S4E17 / 14 Jan 2016
The Wicked
S4E18 / 21 Jan 2016
The Traitor
S4E19 / 28 Jan 2016
The Origins (1)
S4E20 / 15 Feb 2016
The Origins (2)
S4E21 / 15 Feb 2016
The Girlfriend
S4E22 / 31 Mar 2016
The Advice
S4E23 / 21 Apr 2016
The Signal
S4E24 / 28 Apr 2016
The Parasite
S4E25 / 05 May 2016
The Love
S4E26 / 12 May 2016
The Awkwardness
S4E27 / 19 May 2016
The Nest
S4E28 / 26 May 2016
The Points
S4E29 / 02 Jun 2016
The Bus
S4E30 / 09 Jun 2016
The Night
S4E31 / 16 Jun 2016
The Misunderstandings
S4E32 / 23 Jun 2016
The Roots
S4E33 / 15 Aug 2016
The Blame
S4E34 / 16 Aug 2016
The Slap
S4E35 / 17 Aug 2016
The Detective
S4E36 / 18 Aug 2016
The Fury
S4E37 / 19 Aug 2016
The Compilation
S4E38 / 25 Aug 2016
The Scam
S4E39 / 27 Oct 2016
The Disaster
S4E40 / 05 Sep 2016
Season 5
The Stories
S5E1 / 01 Sep 2016
The Re-Run
S5E2 / 05 Sep 2016
The Guy
S5E3 / 08 Sep 2016
The Boredom
S5E4 / 15 Sep 2016
The Vision
S5E5 / 06 Oct 2016
The Choices
S5E6 / 13 Oct 2016
The Code
S5E7 / 20 Oct 2016
The Test
S5E8 / 03 Nov 2016
The Slide
S5E9 / 10 Nov 2016
The Loophole
S5E10 / 17 Nov 2016
The Potato
S5E11 / 06 Feb 2017
The Fuss
S5E12 / 07 Feb 2017
The Copycats
S5E13 / 08 Feb 2017
The Outside
S5E14 / 09 Feb 2017
The Vase
S5E15 / 13 Feb 2017
The Matchmaker
S5E16 / 14 Feb 2017
The Box
S5E17 / 15 Feb 2017
The Console
S5E18 / 16 Feb 2017
The Ollie
S5E19 / 20 Feb 2017
The Catfish
S5E20 / 21 Feb 2017
The Cycle
S5E21 / 22 Feb 2017
The Stars
S5E22 / 23 Feb 2017
The Grades
S5E23 / 27 Feb 2017
The Diet
S5E24 / 28 Feb 2017
The Ex
S5E25 / 01 Mar 2017
The Sorcerer
S5E26 / 02 Mar 2017
The Menu
S5E27 / 06 Mar 2017
The Uncle
S5E28 / 07 Mar 2017
The Weirdo
S5E29 / 08 Mar 2017
The Heist
S5E30 / 09 Mar 2017
The Singing
S5E31 / 01 Sep 2017
The Best
S5E32 / 08 Sep 2017
The Worst
S5E33 / 15 Sep 2017
The Deal
S5E34 / 22 Sep 2017
The Petals
S5E35 / 29 Sep 2017
The Puppets
S5E36 / 06 Oct 2017
The Nuisance
S5E37 / 13 Oct 2017
The Line
S5E38 / 20 Oct 2017
The List
S5E39 / 03 Nov 2017
The News
S5E40 / 10 Nov 2017
Season 6
The Rival
S6E1 / 05 Jan 2018
The Lady
S6E2 / 05 Jan 2018
The Sucker
S6E3 / 12 Jan 2018
The Vegging
S6E4 / 15 Jan 2018
The One
S6E5 / 19 Jan 2018
The Father
S6E6 / 26 Jan 2018
The Cringe
S6E7 / 02 Feb 2018
The Cage
S6E8 / 09 Feb 2018
The Faith
S6E9 / 23 Feb 2018
The Candidate
S6E10 / 02 Mar 2018
The Anybody
S6E11 / 09 Mar 2018
The Pact
S6E12 / 09 Apr 2018
The Neighbor
S6E13 / 13 Apr 2018
The Shippening
S6E14 / 20 Apr 2018
The Brain
S6E15 / 18 Jun 2018
The Parents
S6E16 / 18 Jun 2018
The Founder
S6E17 / 18 Jun 2018
The Schooling
S6E18 / 18 Jun 2018
The Intelligence
S6E19 / 18 Jun 2018
The Potion
S6E20 / 16 Jul 2018
The Spinoffs
S6E21 / 16 Jul 2018
The Transformation
S6E22 / 16 Jul 2018
The Understanding
S6E23 / 16 Jul 2018
The Ad
S6E24 / 16 Jul 2018
The Ghouls
S6E25 / 19 Oct 2018
The Stink
S6E26 / 05 Nov 2018
The Awareness
S6E27 / 06 Nov 2018
The Slip
S6E28 / 07 Nov 2018
The Drama
S6E29 / 08 Nov 2018
The Buddy
S6E30 / 09 Nov 2018
The Possession
S6E31 / 15 Apr 2019
The Master
S6E32 / 22 Apr 2019
The Silence
S6E33 / 29 Apr 2019
The Future
S6E34 / 06 May 2019
The Wish
S6E35 / 13 May 2019
The Factory
S6E36 / 20 May 2019
The Agent
S6E37 / 27 May 2019
The Web
S6E38 / 03 Jun 2019
The Mess
S6E39 / 10 Jun 2019
The Heart
S6E40 / 10 Jun 2019
The Revolt
S6E41 / 17 Jun 2019
The Decisions
S6E42 / 17 Jun 2019
The BFFs
S6E43 / 24 Jun 2019
The Inquisition
S6E44 / 24 Jun 2019
Nicolas Cantu
Gumball Watterson (voice)
Christian J. Simon
Darwin Watterson (voice)
Dan Russell
Richard Watterson (voice)
Teresa Gallagher
Nicole Watterson (voice)
Kyla Kowalewski
Anais Watterson (voice)
Sandra Dickinson
Granny Jojo (voice)
Kerry Shale
Larry Needlemeyer (voice)
