Budokai Tenkaichi 2 had a cool what-if scenario with Raditz where he loses some of his memory after coming to Earth and has a happy relationship with Goku and Gohan. Meaning Goku never dies and trains with King Kai, and culminates with Raditz sacrificing himself by crashing into Vegeta and Nappa's ships in space to save the Earth
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https://imgur.com/dzGMd