Justin Chatwin born October 31 1982 is a Canadian actor He began his career in 2001 with a brief appearance in the musical comedy Josie and the Pussycats Following his breakthrough role as Robbie Ferrier in the blockbuster War of the Worlds 2005 Chatwin headlined studio films such as The Invisible 2007 and Dragonball Evolution 2009 an actionadventure feature based on the manga series Dragon Ball In the 2010s Chatwin acted in small independent films He starred as rock star idol Bobby Shore in the scifi musical Bang Bang Baby 2014 which earned him a Canadian Screen Awards nomination for Best Supporting Actor and appeared in the romantic comedy Unleashed 2016 and drama Summer Night 2019 Throughout the 2000s Chatwin made guest appearances in several television series including Weeds and Lost His first regular role was on the Showtime comedydrama Shameless where he portrayed Jimmy Lishman between 2011 and 2015 Chatwin starred as a cartoonist in the CBS murder mystery drama American Gothic 2016 and also that year he appeared as superhero Grant Gordon The Ghost in the Doctor Who Christmas special The Return of Doctor Mysterio From 2019 to 2021 Chatwin played scientist Erik Wallace in Netflixs Another Life Chatwins journey from Vancouver to Patagonia on motorcycle was depicted in the documentary series No Good Reason 2020 which he also executive produced