Indelicato was a member of the United States Colonial Marine Corps. He was part of a 31 marine platoon under the command of Captain Paget, aboard the combat ship Hasdrubal that landed on the planet Tartarus, kick-starting a massive series of events that led to an all out battle for survival against the Yautja species, Xenomorph organisms and the godlike Engineers.
After the marines landed on Tartarus, they were suddenly ambushed by a large group of Predators, resulting in the death of numerous marines. Paget decides to send Sergeant Roth and his team consisting of Wearing, Jhalil, Freebody, Rucker, Singer, and others into one of their dropships to fly over to the Engineer ship and secure the interior whilst Paget's team approaches the vessel by foot, attempting to sweep the forest using M314 Motion Trackers to flush out the hunters.
Roth orders Wearing and Indelicato to activate their trackers as the squad enters the interior of the vessel. They eventually come across the cockpit, containing a sarcophagus-like object. Singer suggests that he would be able to get the ship operational and have the ship leave Tartarus and abandon the Predators.
The Elder Cracked Tusk Predator, unbeknownst to the other marines, was observing them withing the derelict and called for the Predators who were battling Paget's crew to retreat back to the vessel to stop them from lifting it. The Cracked Tusk Predator ambushes the squad a second time but is finally managed to be killed by Humble by shooting it with a Pulse rifle after it's Wristblades get stuck by accidentally lunging it into the sarcophagus. Singer manages to get the ship operational and plans to send it to the nearest USCM facility, Ganymede station.
Awakening the Engineer and death
As Singer was attempting to contact the Hasdrubal, Indelicato inspected the sarcophagus-like object that was previously hit during the fight with the Predator. The sarcophagus suddenly opens and an Engineer emerges from stasis. Indelicato approaches the Engineer and tries to be friendly. The Engineer responds by brutally crushing Indelicato's head, shocking the marines and forcing them into a retreat.