Future Androids 17 and 18 → Future Vegeta
Future Trunks reports that Vegeta died fighting the androids. The report does not establish whether Android 17 or Android 18 delivered the individual lethal attack. They are initially described as Androids 19 and 20, but the future opponents are later confirmed to be Androids 17 and 18.
SourceChapter 335 — A Message of Terror (Japanese: 恐怖のメッセージ)Full Color Androids and Cell Arc, Vol. 1 · Akira Toriyama / Shueisha
Additional sourceChapter 348 — To the Laboratory...!! (Japanese: 研究所へ…!!)Full Color Androids and Cell Arc, Vol. 2 · Akira Toriyama / Shueisha
Additional sourceChapter 350 — Androids 17 and 18, and...16 (Japanese: 17号・18号、そして…16号)Full Color Androids and Cell Arc, Vol. 2 · Akira Toriyama / Shueisha