Chiaotzu's history was identical to his Universe 18 counterpart until Freeza and King Cold attacked Earth and without the help of Future Trunks, they had to fight them by themselves. The Z Fighters eventually won the fight, but there was more trouble 3 years later. Goku had died of a heart disease, and the Z Fighters had engaged in a one-sided fight against Androids 17 and 18. Every single Z fighter at that time including Chiaotzu died in the fight except for Gohan, who lived on to train Trunks years later.
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