Mr Brightside is a New Zealand-bred thoroughbred racehorse trained in Australia. He is notable for winning 10 Group One (G1) races. He is also famous for rarely running poorly and his very high place percentage, racing in the strongest class and distances in Australia for 4 consecutive seasons. He is also considered one of the best purchases in horse racing history, purchased for 7k and currently has earned more than 18 million over his career.