|"Machine Planet M2… Giru the Traitor?!"|
|Rōmaji||Mashin Wakusei Emu Tsū… Uragiri no Giru!?|
|FUNimation||Giru's Checkered Past|
|Arc||Ultimate Dragon Balls Arc|
|Japanese||June 19, 1996|
|English||November 14, 2003|
"Machine Planet M2… Giru the Traitor?!" (マシン惑星Ｍ２…裏切りのギル！？, Mashin Wakusei Emu Tsū… Uragiri no Giru!?; FUNimation "Giru's Checkered Past") is the sixteenth episode of the Dragon Ball GT anime.
Giru convinces Trunks to land on his home planet, since he hasn't been there in years. They walk into a city that seems deserted. Thousands of Giru-like robots appear, and they all seem to know him. The three get hungry, so they go in search of food. They are confronted by a group of incredibly powerful robots who call themselves the Sigma Force. Giru jumps up to the platform they're on to join them. One of the robots disintegrates, and then reforms around Gokū and Trunks, trapping them. As Pan curses Giru for betraying them, the robots, including Giru, fly away to General Rilld.
- For the FUNimation dub, this episode was originally used as the basis for the FUNimation-made clip-show "A Grand Problem," which aired on Cartoon Network in 2003. The intact version, "Giru's Checkered Past," did not air on US television until the series was run on Nicktoons in 2012.
|Role||Seiyū||FUNimation dub Voice Actor|
|Son Gokū||Masako Nozawa||Stephanie Nadolny|
|Pan||Yūko Minaguchi||Elise Baughman|
|Giru||Shinobu Satōchi||Sonny Strait|
|Trunks||Takeshi Kusao||Eric Vale|
|Doctor Myū||Kazuyuki Sogabe||Duncan Brannan|
|General Rilld||Kiyoyuki Yanada||Andrew Chandler|
|Nehji||Hiroyuki Satō||Cindy Beal|
|Nut||Shin'ichi Yamada||Kyle Hebert|
|Rivet||Ichirō Nagata||Chris Cason|
|Vis||Tetsu Inada||Kyle Hebert|
|Narrator||Jōji Yanami||Andrew Chandler|