The 30-year-old actor draws inspiration from his own family when it comes to portraying the sibling rivalry in 'Thor' between his character and Loki, reported Contactmusic.
"We're competitive as siblings are, in everything from sport - backyard cricket and football - to who's in control of the remote watching TV... You understand what it's like to have to that love-hate sort of thing where you'd do anything for them, but the simplest thing can annoy you," Chris said.
"I have actually been on a road trip with Chris and Liam, and it's very similar to arguments between Thor and Loki," he added.
"If you spend time with Luke, he just knocks both their heads together and goes, 'Shut up, boys!'," he said.