Alexander is part of a group of international thieves.
During the events of Die Hard (1988) played by Joey Plewa
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. Capt. Mitchell and his SWAT team get ready to enter the building and Hans tells the others to get ready. Mitchell sends an armored personnel carrier, (APC) towards the building. Alexander and James fire the missile launcher at the APC, stopping it in its tracks. After Hans tells Alexander to shoot the APC one more, John McClane takes a block of C4 and puts it on a chair and drops it down the elevator chute. The explosion blows out most of the lower floors, killing Alexander and James.