Android 17’s continued existence in Dragon Ball Super is directly attributed to the events following the Cell Games Saga in Dragon Ball Z. He was revived by the Dragon Balls after being killed by Super Perfect Cell when he self-destructed. This wish, made by Krillin, ensured that all of Cell’s victims were brought back to life.
This resurrection played a significant role in the narrative progression of Dragon Ball Super. It allowed the character to re-emerge as a vital participant in later story arcs, such as the Universe Survival Saga. His transformation from a former antagonist to a protective park ranger and a valuable ally highlights a key theme of redemption within the franchise.