Bronco, also known as Lunar, is the boss of the City in Ruins in the first R-Type mission. It's a R-craft-sized computer unit with a large radar dish in front. This radar dish, constantly on the move, shields the unit from damage, including Wave Cannon shots. It's accompanied by Sonar. Bronco has no offensive or defensive capability of its own. The battle consists of dodging garbage debris, avoiding Bydo Shots from the Sonar, and taking potshots at Bronco whenever possible.