In case anybody isn't completely sure, the pool of previous winners selected to return for Season 40 encompasses the following seasons:
* Season 3 (Africa) (Ethan)
* Seasons 7 (Pearl Islands) and 20 (Heroes and Villains) (Sandra)
* Season 8 (All-Stars) (Amber)
* Season 11 (Guatemala) (Danni)
* Season 13 (Cook Islands) (Yul)
* Season 16 (Micronesia: Fans vs Favorites) (Parvati)
* Season 22 (Redemption island) (Boston Rob)
* Season 23 (South Pacific) (Sophie)
* Season 24 (One World) (Kim)
* Season 25 (Philippines) (Denise)
* Season 27 (Blood vs Water) (Tyson)
* Season 28 (Cagayan) (Tony)
* Season 29 (San Juan Del Sur: Blood vs Water) (Natalie)
* Season 31 (Cambodia: Second Chance) (Jeremy)
* Season 32 (Kaoh Rong) (Michelle)
* Season 33 (Millenials vs Gen X) (Adam)
* Season 34 (Game Changers: Mamanuca Islands) (Sarah)
* Season 35 (Heroes vs Healers vs Hustlers) (Ben)
* Season 36 (Ghost Island) (Wendall)
* Season 37 (David vs Goliath) (Nick)
* Seasons 7 (Pearl Islands) and 20 (Heroes and Villains) (Sandra)
* Season 8 (All-Stars) (Amber)
* Season 11 (Guatemala) (Danni)
* Season 13 (Cook Islands) (Yul)
* Season 16 (Micronesia: Fans vs Favorites) (Parvati)
* Season 22 (Redemption island) (Boston Rob)
* Season 23 (South Pacific) (Sophie)
* Season 24 (One World) (Kim)
* Season 25 (Philippines) (Denise)
* Season 27 (Blood vs Water) (Tyson)
* Season 28 (Cagayan) (Tony)
* Season 29 (San Juan Del Sur: Blood vs Water) (Natalie)
* Season 31 (Cambodia: Second Chance) (Jeremy)
* Season 32 (Kaoh Rong) (Michelle)
* Season 33 (Millenials vs Gen X) (Adam)
* Season 34 (Game Changers: Mamanuca Islands) (Sarah)
* Season 35 (Heroes vs Healers vs Hustlers) (Ben)
* Season 36 (Ghost Island) (Wendall)
* Season 37 (David vs Goliath) (Nick)
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