Having grown up on Tracy Island, Kayo is like a sister to the Tracy brothers. And as an expert in the Wing Chun form of Kung Fu, Kayo can more than hold her own with the boys – not even Virgil can match her in close combat! 

Responsible for security on Tracy Island, Kayo is as focused and stealthy as her Thunderbird Shadow vehicle, with a rebellious streak that can often lead to conflict with Scott. Despite this, Kayo’s loyalty to International Rescue is without question, as anyone threatening her adoptive family soon discovers.