Unlike their counterparts in Future Trunks’ timeline, Android 17 and Android 18 never became evil in the Dragon Ball Z anime. Both characters were presented as villains during Dragon Ball Z’s Cell Saga, but are now counted as allies of the Z-Warriors. 18 married Krillin after Cell’s defeat and stuck around as a supporting character, whereas 17 was brought back near the end of Dragon Ball Super as a park ranger devoted to protecting wildlife.
The lives led by the two androids contrast greatly with what was originally expected of them in the franchise. Following his arrival in the present, Future Trunks warned Goku of their coming battle with Android 17 and Android 18. In his timeline, the pair of bloodthirsty androids had ruthlessly murdered Gohan, Piccolo, Vegeta, Krillin, Yamcha, Tien, and Chiaotzu. Thanks to Trunks’ warning, as well as other complications, events in the mainline ended up playing out differently. It was Cell who turned out to be their biggest threat, and though the Z-Warriors did ultimately fight the troublesome androids, neither remained antagonists nor did they ever actually kill anyone.
Related: DBZ: Are The Human Z-Warriors Stronger Than Super Saiyans Now?
Android 17 and Android 18 were never the villains that Future Trunks promised them to be. Why both characters are so different from the two mass murderers that plunged the Earth into chaos in Trunks’ timeline was never properly addressed in the anime, and none of the possible explanations for it really work. A common assumption is that 17 and 18’s heroic turns were positive consequences of the alternations made to the timeline, but nothing that Future Trunks set in motion accounts for these particular differences.
Numerous changes were made to the
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