Two days before the geth attack on Eden Prime, Donk and his squadmates were on downtime fooling around at a bar. He tries seducing Ashley over drinks, but his other squadmates scoff at his chances and even joke that there's a better chance of Ashley hooking up with Pennyloafer, the other girl on the squad, than with him.
The fun times are cut short with the arrival of a commanding officer, a lieutenant. Donk snaps at attention to herald the CO's arrival, and listens as the officer explains a new mission for them: a Prothean Beacon is unearthed on the planet and 212 is to defend it. Donk is assigned leader of Dog Squad for the operation, and tries questioning the CO over the decision as Ashley is the nominal leader of the group.
While Unit 212's other squads proceed to the mission site on transports, Dog Squad is ordered to patrol the terrain from the colony to the beacon, and Donk has the unenviable job of parrying questions of that nature from his squadmates. He wouldn't take lip from his teammates and immediately pulls his rank when the need arises.
Ash observes that Donkey is still trying to seduce her and the sergeant doesn't deny it, though he does insist that he did mean everything he said. She holds out hope that they'll both get lucky one day, and Donk asserts that luck is for the lonely: Dog Squad is a team and they've got each other.
On the night of the geth attack, Dog Squad stumbles upon the remains of their fellows from Bravo Squad. Donk reports that squads Able and Charlie haven't heard from Bravo since early evening, and divides his group into investigation teams. He takes Penny with him and assigns Ashley with Bates, intending to sweep the area for survivors, but found nobody else.
Dog Squad prematurely engages the geth on the mission site at dawn, though Ashley tries to rebound by issuing commands to her team. Donk assists in diversionary measures while Ashley and fellow soldier Rasputin close in from the geth's behind, taking out a few geth but ultimately losing. Sergeant Donkey is killed by weapons fire while Ashley's issuing a retreat.
A day after the geth attack, Ashley is interviewed on the Citadel by an Alliance psychologist regarding the events on Eden Prime. At the session's conclusion, Ashley recalls Donkey's words that luck is indeed for the lonely, muttering to herself that he was right.
- Donkey has the rank of sergeant, which doesn't exist in the Alliance rank structure.