Kodi was born on June 13, 1996 in Adelaide, Australia, to Sonja Smit and Andy McPhee, who is an actor and professional wrestler. His sister is actress Sianoa Smit-McPhee.

In 2014, Kodi starred in Twentieth Century Fox's Dawn of the Planet of the Apes opposite Andy Serkis, Jason Clarke, Gary Oldman, and Keri Russell. The project reunited him with director Matt Reeves with whom he previously worked with on the film Let Me in (opposite Chloe Moretz). The film has grossed over $700MM Worldwide.

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Trivia

Brother of Sianoa Smit-McPhee.
Trained at Drama with a Difference.
Father is Andy McPhee.
Is good friends with actor Garrett Backstrom.
His favorite movie is Reservoir Dogs (1992).
He has English, Scottish, and Dutch ancestry.

I thought that 'Twilight' would be a kind of girl movie, but it was cool.
My friends in Australia, they grew up with me acting, so they're used to it.
In L.A., I live right across from Universal Studios.