S01E19: Substitute Creature
Miss Fowl swallows a seed from Jimmy's DNA-accelerated spinach plant turning her into a 50-foot plant.
Previous Episode 
Season 1
When Pants Attack
S1E1 / 20 Jul 2002
Normal Boy
S1E2 / 06 Sep 2002
Birth of a Salesman
S1E3 / 06 Sep 2002
Brobot
S1E4 / 13 Sep 2002
The Big Pinch
S1E5 / 13 Sep 2002
Granny Baby
S1E6 / 20 Sep 2002
Time is Money
S1E7 / 20 Sep 2002
Raise the Oozy Scab
S1E8 / 27 Sep 2002
I Dream of Jimmy
S1E9 / 27 Sep 2002
Jimmy On Ice
S1E10 / 04 Oct 2002
Battle of the Band
S1E11 / 04 Oct 2002
See Jimmy Run
S1E12 / 14 Oct 2002
Trading Faces
S1E13 / 14 Oct 2002
The Phantom of Retroland
S1E14 / 30 Oct 2002
My Son, the Hamster
S1E15 / 30 Oct 2002
Hall Monster
S1E16 / 01 Nov 2002
Hypno-Birthday to You!
S1E17 / 01 Nov 2002
Krunch Time
S1E18 / 15 Nov 2002
Substitute Creature
S1E19 / 15 Nov 2002
Safety First
S1E20 / 30 Nov 2002
Crime Sheen Investigation
S1E21 / 30 Nov 2002
Journey to the Center of Carl
S1E22 / 31 Jan 2003
Aaughh!! Wilderness!!
S1E23 / 31 Jan 2003
Party at Neutron's
S1E24 / 17 Feb 2003
Ultra Sheen
S1E25 / 17 Feb 2003
Broadcast Blues
S1E26 / 14 Mar 2003
Professor Calamitous, I Presume
S1E27 / 14 Mar 2003
Maximum Hugh
S1E28 / 17 May 2003
Sleepless in Retroville
S1E29 / 17 May 2003
Make Room for Daddy-O
S1E30 / 06 Jun 2003
A Beautiful Mine
S1E31 / 01 Aug 2003
Sorry, Wrong Era
S1E32 / 05 Sep 2003
Season 2
Beach Party Mummy
S2E1 / 19 Sep 2003
The Retroville 9
S2E2 / 03 Oct 2003
Grumpy Young Men
S2E3 / 03 Oct 2003
Nightmare in Retroville
S2E4 / 29 Oct 2003
Monster Hunt
S2E5 / 11 Nov 2003
Jimmy For President
S2E6 / 11 Nov 2003
Return of the Nanobots
S2E7 / 14 Nov 2003
Holly Jolly Jimmy
S2E8 / 08 Dec 2003
Love Potion #976/J
S2E9 / 13 Feb 2004
Sheen's Brain
S2E10 / 08 Mar 2004
MaternoTron Knows Best
S2E11 / 09 Mar 2004
Send in the Clones
S2E12 / 09 Mar 2004
The Great Egg Heist
S2E13 / 10 Mar 2004
The Feud
S2E14 / 10 Mar 2004
Out, Darn Spotlight
S2E15 / 11 Mar 2004
The Junkman Cometh
S2E16 / 12 Mar 2004
Foul Bull
S2E17 / 26 Mar 2004
The Science Fair Affair
S2E18 / 26 Mar 2004
Men at Work
S2E19 / 02 Jun 2004
The Mighty Wheezers
S2E20 / 07 Jun 2004
Billion Dollar Boy
S2E21 / 07 Jun 2004
Season 3
Lights! Camera! Danger!
S3E1 / 27 Nov 2004
The N Men
S3E2 / 27 Nov 2004
The Tomorrow Boys
S3E3 / 23 May 2005
Fundemonium
S3E4 / 24 May 2005
Stranded
S3E5 / 26 May 2005
Jimmy Goes to College
S3E6 / 27 May 2005
Who's Your Mommy?
S3E7 / 20 Jun 2005
Clash of the Cousins
S3E8 / 20 Jun 2005
My Big Fat Spy Wedding
S3E9 / 22 Jul 2005
Crouching Jimmy, Hidden Sheen
S3E10 / 18 Nov 2005
The Incredible Shrinking Town
S3E11 / 23 Jan 2006
One of Us
S3E12 / 24 Jan 2006
Vanishing Act
S3E13 / 24 Jan 2006
The Trouble with Clones
S3E14 / 25 Jan 2006
The Evil Beneath
S3E15 / 26 Jan 2006
Carl Wheezer: Boy Genius
S3E16 / 26 Jan 2006
Who Framed Jimmy Neutron?
S3E17 / 27 Jan 2006
Flippy
S3E18 / 27 Jan 2006
How to Sink a Sub
S3E19 / 17 Nov 2006
Lady Sings the News
S3E20 / 17 Nov 2006
King of Mars
S3E21 / 25 Nov 2006
El Magnifico
S3E22 / 25 Nov 2006
Best in Show
S3E23 / 25 Nov 2006
Debi Derryberry
Jimmy Neutron (voice)
Jeffrey Garcia
Sheen Estevez (voice)
