The WORST seasons of Johnny Test

Every season of Johnny Test ever, ranked from worst to best by thousands of votes from fans of the show. The worst seasons of Johnny Test!

Crafty 11-year-old Johnny Test and his genetically modified talking dog go on high-octane adventures to save his family (and the world) from disaster.

Last Updated: 6/14/2026Network: Cartoon NetworkStatus: Ended

Best Episodes
Worst Episodes
Best Seasons
Worst Seasons

5.88

8 votes

#1 - Season 2

First Aired 10/28/2006

6.00

3 votes

#2 - Season 6

First Aired 4/23/2013

6.33

3 votes

#3 - Season 4

First Aired 9/10/2009

6.33

3 votes

#4 - Season 3

First Aired 8/17/2007

6.50

4 votes

#5 - Season 5

First Aired 6/13/2011

7.11

9 votes

The WORST seasons of Johnny Test

Every season of Johnny Test ever, ranked from worst to best by thousands of votes from fans of the show. The worst seasons of Johnny Test!

#1 - Season 2

First Aired 10/28/2006

#2 - Season 6

First Aired 4/23/2013

#3 - Season 4

First Aired 9/10/2009

#4 - Season 3

First Aired 8/17/2007

#5 - Season 5

First Aired 6/13/2011

#6 - Season 1

First Aired 9/17/2005