Who is Cameron Smith from Going Bovine and what is their importance?

Cameron Smith is an angry 16-year-old loner. His sister, Jenna, is a popular girl who has what Cameron doesn't seem to want: friends, popularity, and good grades. Cameron's parents, Mr. and Mrs. Smith, have a distant relationship and Cameron can barely tolerate spending time with either of them. Cameron deals with his family issues by smoking pot and listening to Portuguese music by the Great Tremolo, an off-key singer with a ukulele.