Aviva Corcovado is a member and the third-in-command of the Wild Kratts crew; she is a bio-mechanical engineer and the creator of all the Wild Kratts' inventions, most notably the Tortuga and the Creature Power Suits.
Aviva is a young woman of above average height; she has bushy dark brown hair that she always ties back in a ponytail, green eyes (with a slight grayish tinge), and olive skin. She usually wears a purple shirt and a yellow jacket with a blue stripe running down both of the sleeves, blue jeans held by a black belt with a bolt on it, worn crookedly around her waist, and purple and white converse shoes. In Octopus Wildkratticus, while searching for the Creature Power Suits, she wore a violet wetsuit. Her beach outfit consists of a yellow tank shirt, blue jean shorts, bracelet, necklace, and yellow sandals with blue straps. Her signature color is violet/purple.
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 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. She might have a crush on Chris due to some hints and moments in the episodes.
- Aviva is also Shi La Won, Twilight Sparkle and Emily's best friend along with Princess Cadance.
- Connor Lacey and and his friends will meet Aviva and her friends in The Irelanders Meets Tarzan.