Kung Timmy was originally titled Kung Fairy, but it got changed due to Timmy mostly doing karate.
This episode reveals that Tootie goes to the same school as Timmy.
This is the first time Tootie appears without Vicky in an episode, and the first time Timmy actually beats up Francis.
Fitness trainer Billy Blanks voices himself in this episode.
When Tootie is wearing her binoculars, it is shown that she apparently has violet irises around her pupils.
This episode hasn't aired on Nickelodeon in a very long time, though it is still airing on YTV and is available on iTunes. This episode has also aired on Nicktoons.
As stated in the book of kung-fu, kung-fu must always be used defensively (defend yourself or someone else, for example), it should NEVER be used for vengeance. Another example of this is used in a SpongeBob SquarePants episode called Squid Defense.
Apparently Francis hits and beats up girls. Timmy was shocked at this since Francis beats up most of the guys.
This is one of the four episodes where Timmy is barefoot for nearly the whole episode; the other three being Beach Bummed, Hassle In The Castle and Lights Out. Interesting, considering Timmy's supposed fear of bare feet. This episode is also the only one to show Timmy's feet in detail. He was, also, barefoot for the majority of the episode Crime Wave but that's because he was poofed out of the bathtub completely naked. It may be possible that he is not scared of his own bare feet.
The Simpsons - One of the title cards that appears when Timmy practiced kung-fu at the Dimmsdale gym, says "Doh!", which is Homer's famous catchphrase.
Someone saying, "They'll eat you, then kill you".
Someone landing on Timmy's mom.
At the end of the episode, Timmy is used as a threat.
When Timmy opens the door of Billy Blanks' room in the gym, he wears his normal chlothes for a brief moment.
When Tootie shows up and cheers on Timmy during the fight, she is wearing a Timmy Turner shirt and Timmy flags. After Francis grabs her, she appears back in her normal clothing and remains that way for the rest of the episode. Also, in the-same goof, when Francis grabs her, Tootie's arms are still outside. But after that, her arms are now trapped inside Francis' fist. This goof is commonplace for other characters.
Timmy should have been able to defeat Francis even before Tootie showed up, since Timmy was already fighting to defend his fairies.
This fact may have been invalid because at first Timmy makes it clear he's fighting for vengeance.
A screenshot from this episode appears on the back cover of the Scary Godparents VHS and DVD, neither of which contain this episode.
Francis would be expelled from the school and/or arrested for hitting and beating up girls, but he is not on the jail in next episodes.
In the title card, Wanda's eyes are not colored pink, but colored purple.