Machine Day Breaker is Team Taiyo's Duel Runner. The team takes turns using the Duel Runner, rather than having one each. It was made using a near-junk Duel Runner they purchased and improved it using parts they found or obtained from Taro's father's non-functioning Duel Runner. After the Diablo nearly wrecked it, Yusei and Bruno repaired and improved it. Its computer monitor is fuzzy and pixellated, but it works well otherwise.