S4·E28 Who's Johnny
Core
Aired May 17, 2010
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Synopsis
When Sissy considers Johnny too gross to help her in a science project, he begs Susan and Mary to change his personality.
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Frequently Asked Questions
When did Season 4 Episode 28 of Johnny Test air?
Season 4, Episode 28 ('Who's Johnny') originally aired on May 17, 2010.
How long is Season 4 Episode 28 ('Who's Johnny')?
The episode follows the standard broadcast runtime for Johnny Test.
What happens in Johnny Test Season 4 Episode 28?
When Sissy considers Johnny too gross to help her in a science project, he begs Susan and Mary to change his personality....
All Johnny Test episode ratings Season 4 Where to watch
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