|"Johnny's New Baby Sisters"|
|Season 4, Episode 40a|
|United States Airdate:||November 9, 2009|
|Canada Airdate:||September 10, 2009|
"Johnny X: The Final Ending"
Susan and Mary acccidently turn themselves to twin babies when parents were out. Irresponible baby sitter Gil take care of them.Johnny had to take care of baby Susan And Mary Test from irresponisble baby sitter Gil.this interferes with a party he and Dukey had been planning and Mr and Mrs.Test are mad. Then when Gil was giving babies spicy food.Susan And Mary written crack code to get then back to teens.Johnny know what they are writing and take them inside guniea pig.He entered crack code and Susan And Mary again become teen
- This is the first episode of Season 4.