Gallien is the driver who we are introduced to at the very beginning of this text who gives Chris a lift in Alaska. He is also the last person who probably saw Chris McCandless alive before he embarked on his attempt to subsist by himself in the Alaskan wilderness that ended so tragically. Gallien, we are told, is a union electriciton, and was on his way to Anchorage. For Gallien, who was himself an accomplished hunter and woodsman, he began to fear for Chris and for his plans of staying by himself in the wilderness and living off nature's bounty. Note what he said to the author about Chris and his fears for his safety:
"He wasn't carrying anywhere near as much food and gear as you'd expect a guy to be carrying for that kind of trip," Gallien recalls.
Chris opened up to Gallien and shared his dreams and plans for his stay in the wilderness with him, but crucially he would not listen to any warnings that Gallien gave about the danger of what he was planning.