Thread:Asriel Dreemurr (Goat Boy)/@comment-26563978-20160622232429/@comment-26563978-20160622235820

Explanation: In UnderSwap, Monster Kid's dust falls into a Temmie Flake, that is actually a Temmie egg, and he's reborn as an evil Temmie. And Undyne used Determination on an unfertile Temmie egg (yes temmies come out of eggs) that became fertile with the determination if that makes sence.