The Highwayman is a boss fought in Chrono Cross. It is a robot that has gone haywire, found within the Highway Ruins of the Dead Sea.
In addition to powerful physical attacks, this boss uses Rampage for very large physical damage on a single party member, as well as ExhaustGas, which targets all party members and has a 60% chance of inflicting the Darkness status effect. It is highly recommended to have a character with BlackOut equipped for this boss fight, as the darkness status can greatly prolong the length of this fight; an undesirable situation given this boss's deadly Rampage attack.
Some fans have theorized that this is the ultimate fate of Johnny from Chrono Trigger since the Highwayman appears to be a skeletal enemy with Johnny's automobile body, sunglasses, and mohawk, and because he shows up in the Dead Sea. Since one of his arms is a sawblade and the other is a socket wrench, some think that he went overboard with modifying himself, becoming more and more machine over time until he had no humanity left.