|Season 3, Episode unknown|
|Air date||July 21, 2006|
|Flippy||Lady Sings the News|
Jimmy Timmy Power Hour 3: The Jerkinators! Is the third and final Jimmy Timmy Power Hour with a crossover between the Fairly OddParents! And The Adventures of Jimmy Neutron: Boy Genius. It aired on July 21, 2006.
Carl, and Sheen help complete Jimmy's new multidimensional portal,,where he looks to see how everyone is doing until he sees Timmy. This later ends up causes a rift between the two. After a jet pack battle,they both land at Cindy's front door,where they learn that she's on vacation for a week. Without a reason to battle,Jimmy and Timmy become friends and forget about their respective normal ones (Carl, Sheen, Libby, Chester, AJ, Cindy),making them all jealous. J&T decide to do crime together, fighting first Eustace Strytch, then the Crimson Chin villains. Deeming them all too easy,they decide to make their own villain,which Jimmy designs on the computer based on the top ten bestselling video games. Once he comes out on paper,Cosmo and Wanda use their magic to make him alive. Timmy goofed up big time and made him ADAPTABLE instead of ADOPTABLE. After betraying him too,the villain has enough and literally wants to crush Jimmy and Timmy, and liking their old buddies because they were never mean to him. Things get worse when Retroville citizens treat the villain rotten and he starts making his own dimension,Retrodimmsdaleville,out of Retroville and Dimmsdale,destroying them. After apologizing to their friends 500 times and then making them see that they were wrong for forgetting about them,Jimmy and Timmy get them back and they make a plan to make the villain "Shirley" vulnerable. Once they do,Sam and Hugh are about to "kick him while he's down", but Timmy and Jimmy explain that it is their fault, not Shirley's, which makes him shed tears of joy. He later opens a pizza eatery while Libby makes Jimmy and Timmy apologize on tape.
- The main theme of Jimmy Timmy Power Hour 3: The Jerkinators is that when you have friends, they're your friends. Never ever burn bridges with your friends, because it is considered cruel, unless they are mean to you.
- This episode was intended to be the series finale of both The Fairly OddParents! and Jimmy Neutron. However, the Fairly OddParents! was on a one and a half year hiatus while Jimmy Neutron ended up being discontinued. However, in 2010, a spinoff of Jimmy Neutron, called Planet Sheen, premiered.
- Captain Betty can be seen on a Purple Flurp billboard.