Ivy Seymour (played by Natalie Brown) is a protagonist in Thunderbird.
Will Brook (played by Colten Wilke) appears in Thunderbird.
Young Will (played by Ben Andrusco-Daon) appears in Thunderbird.
Sarah Brook (played by Brittney Wilson) appears in Thunderbird.
Chief George (played by Julian Black Antelope) appears in Thunderbird.
Faye Brook (played by Natasha Young) appears in Thunderbird.
Young Sarah (played by Ava Sleeth) appears in Thunderbird.
