|"The Strongest Enemy?! The Fearsome Dragon who Uses Dirty Tricks"|
|Rōmaji||Saikyō no Teki!? Kyōfu no Urawaza o Tsukau Ryū|
|FUNimation||The Two-Star Dragon|
|Saga||Shadow Dragon Saga|
|Japanese||June 18, 1997|
|English||September 11, 2004|
"The Strongest Enemy?! The Fearsome Dragon who Uses Dirty Tricks" (最強の敵！？恐怖の裏ワザを使う龍, Saikyō no Teki!? Kyōfu no Urawaza o Tsukau Ryū; FUNimation "The Two-Star Dragon") is the forty-ninth episode of the Dragon Ball GT anime.
The Two-Star Dragon, is severely polluting the entire area, so Pan steps in to stop him. She is much more powerful than the dragon and relentlessly beats it up. But Pan's attacks seem to do less and less, until the dragon is able to overpower her. Gokū tries to transform into a Super Saiyan and finds that he is unable to. The dragon explains that his pollution causes all living things to exponentially weaken, die and decay over a short period of time. This is why Pan's strength is gone, and why Gokū can't power up. He also reveals that he was created when Gokū wished to revive Bora, father of his old friend Upa, after he was killed by Taopaipai, horrifying Gokū with the fact that he was indeed responsible for the creation of the Evil Dragons. The dragon beats them up, and then throws them into the lake. Giru, who is unaffected by the poison due to being a robot, goes underwater and pulls them to an uninfected part of the lake. There is a spring here that is feeding in pure water from underground, keeping the area clean. Gokū blasts the hole, flooding the lake with clean water. With their powers rejuvenated, Gokū and Pan destroy the dragon quickly before his pollution has enough time to take effect and recover the two-star ball, which returns to its original form.
|Role||Seiyū||FUNimation dub Voice Actor|
|Son Gokū||Masako Nozawa||Stephanie Nadolny
|Pan||Yūko Minaguchi||Elise Baughman|
|Giru||Shinobu Satōchi||Sonny Strait|
|Two-Star Dragon||Chafūrin||Bradford Jackson|
|Narrator||Jōji Yanami||Andrew Chandler|