Jack Halliday
Jack Halliday is the bassist in the band Twenty Twenty. He was born on May 21st, 1990, and he’s stuck with his annoying brother Sam and his weird little sister Lydia.
Jack: 'Sam’s a poser. I’m the real Halliday.'
Jack texts his mom: 'Why do I have to share a band with my brother?'
Jack tells Lydia: 'You’re not cool. You’re just weird.'