HomePeople Biography and filmographyMason Mahay Biography unavailable on TMDB. Movies (5)TV shows (2) Movies (5) She's in Portland2020 Behind the Walls2018 · Derry Harper Smartass2017 · Hugo Valley of Bones2017 · Ezekiel If You Give a Mouse a Christmas Cookie2016 · Oliver TV shows (2) If You Give a Mouse a Cookie2015 · Oliver (voice) Austin & Ally2011 · Knight in Shining Armor