Coppin attended Rio Americano High School and California State University, Sacramento before migrating to Australia aged nineteen where he attended and graduated from the National Institute of Dramatic Artist
He was raised in the Sacramento suburbs of Rancho Cordova and Carmichael, California. The Coppin family are also long-term residents of Stinson Beach, California. He now divides his time between the United States of America and Australia after residing in Sydney for many years working in theatre, film and television
In 2001 Coppin temporarily moved to Melbourne with Jane Borghesi where the couple married in 2006.
They have one son. His many stage appearances include The Child Catcher in the Australian national production of Chitty Chitty Bang Bang (musical), Robert Helpmann in his one-man play Lyrebird: Tales of Helpmann, and Puck in the acclaimed Opera Australia production of A Midsummer Night"s Dream (Benjamin Britten) directed by Baz Luhrmann with set and costumes by Catherine Martin. In 1989, at the request of playwright Patrick White he played the role of the Young Manitoba in the Sydney Theatre Company production of "The Ham Funeral", directed by Neil Armfield.
His television appearances include Nightmares and Dreamscapes: From the Stories of Stephen King. His film appearances include the Spierig brothers Predestination starring Ethan Hawke, The Tender Hook, Emulsion, One Night Stand, Lorca and the Outlaws, and Mad Max 2.
In 2011 Coppin appeared in the Melbourne Theatre Company"s production of "A Behanding in Spokane" by playwright Martin McDonagh, and in 2006/07 as Vice Principal Panch in The 25th Annual Putnam County Spelling Bee for which he wrote additional material.
He has also narrated several audiobooks of the American children"s television series Bear in the Big Blue House released by American Broadcasting Company Foreign Kids. "Lyrebird: Tales of Helpmann" - Sydney Opera House, Edinburgh Festival Fringe, City of London Festival, Australia, New Zealand, United States of America. "Buzz" - Company-written with Warren Coleman, Belvoir (theatre).
"The Minutiae of Inertia" - Melbourne Fringe Festival 2005. "UnAmerica"; "Happy Feet" - contributing writer
"Strictly Ballroom" - play, contributing writer