Marco is part of a group of international thieves.
During the events of Die Hard (1988) played by Lorenzo Caccialanza
Hans Gruber goes to the 30th floor of the Nakatomi building, along with Franco, Alexander, Marco, Uli, Fritz and James. They then shoot in the air to get the attention of the party goers. John McClane continues up the stairs and sees Uli, Marco and Heinrich transporting guided missiles. Heinrich, Marco and Uli set explosives underneath the roof of the building. As Sgt. Al Powell is leaving the building, John grabs a chair and uses it to break the window in Takagi's office, alerting James who radios Heinrich, who sends Marco after John. Heinrich and Marco go into Takagi's office and John shoots and kills both of them.