>>55457148They're from alternate timelines where all the Pokemon look like that. Sada contacted the past timeline and Turo contacted the future timeline. Terapagos created a link between this world and an alternate timeline, letting us meet Sada/Turo before they completed their time machine, and we traded a record of our adventures in Area Zero for the professor's Scarlet/Violet Book, which now sits as a key item in our inventory. That's the same book that the AI Professor took with them into the past/future timeline.