Gwendoline Yeo as Techrona - TMNT:Half Shell Hero’s Fan Cast | myCast.io
Gwendoline Yeo
Age: 48
female
Gwendoline See-Hian Yeo ( born July 10, 1977) is an actress, musician and voice actress.
Description above from the Wikipedia article Gwendoline Yeo, licensed under CC-BY-SA, full list of contributors on Wikipedia.
More of the same from season 2 but with new characters and the turtle find out that Mutagen is the blood of the Utrom witch makes them and splinter related to the Utrom ( also splinter is their biological father)
