Aviva

Aviva is the leader of the Tortuga gang, second in command to Chris and Martin. She designs all of the inventions the Kratts use, usually nature inspired. She is an engineer and an inventor. Once she has made up her mind, it takes appealing to her emotions and overwhelming evidence to change it. She is also competitive, rivaling Zach in invention contests, the Kratts, and even nature itself, most notably in "Cheetah Racer" where she bet that she could invent a land vehicle that was faster than a cheetah, although she was proved wrong. In some episodes, she use words in Spanish. One time, she used a French word, "Moi", when she introduces the Bassy Chassis 3000 in the episode Bass Class. Her Creature Power suit color is purple. For instance, she used this to become a Lawes's parotia in "Bird's of a Feather", a groundhog girl in "Groundhog Wake Up Call", a Thompson's gazelle in "The Amazing Creature Race", and a giant female praying mantis to humiliate Zach in "Praying Mantis".