Alex O'Donnell — 17 Again Character Profile

About Alex O'Donnell

Mike's 16-year-old son who faces bullying at school. He builds a close friendship with Mark, gains confidence through his guidance, and finally manages to get together with his crush.

Character Facts

Played by

Sterling Knight

Appears in

17 Again (2009)

Role

Supporting

Relationships (1)

• Alex O'Donnell — Family Father — Mike O'Donnell (Adult) (Matthew Perry)

  Father-son relationship

Explore the full interactive character relationship map of 17 Again

More characters from 17 Again

• Mike O'Donnell (Zac Efron)
• Scarlett O'Donnell (Leslie Mann)
• Ned Gold (Thomas Lennon)
• Maggie O'Donnell (Michelle Trachtenberg)
• Samir (Mario Cassem)
• Principal Jane Masterson (Melora Hardin)
• Janitor (Brian Doyle-Murray)
• Ned Gold (Teen) (Tyler Steelman)
• Samantha (Tiya Sircar)
• Mike O'Donnell (Adult) (Matthew Perry)
• Wendy (Collette Wolfe)
• Coach Murphy (Jim Gaffigan)