Argyle was born before the Great War and first met Dashwood in 2241, when the adventurer stole his girlfriend. However, despite the misunderstanding, they became good friends.
Argyle was a very irritable individual constantly exasperated by his master's recklessness and how easily he fell for women. Nevertheless, he was very loyal, refusing to abandon him and always saving him from any dire situations, no matter how much effort, time and skill was required.
Argyle was a master of Unarmed combat, practicing kung-fu, being so skilled he could rip out an opponent's heart or kill a mirelurk with his bare hands. He apparently liked to collect martial arts memorabilia, as he carried the Unarmed Bobblehead. He was a fan of the Shady Sands Shuffle maneuver. He could even disarm slave collars "with [his] eyes closed," indicating that he was also skilled in Explosives.
The final adventure with Dashwood came when Dashwood was seduced by Penelope Chase into revealing to her the secret underground city of Rockopolis that Dashwood and Argyle were charged with keeping secret. Dashwood, ever easily controlled and manipulated by women, took her to it where she revealed she was in fact a slaver and a double agent for Paradise Falls. Before she could kill Dashwood, Argyle ripped out her heart with his attack dubbed the "Eagle Claw". Unfortunately, it was too late for either Argyle or Dashwood to stop the slavers from attacking the village, and they were separated in all the confusion. While Dashwood somehow managed to escape, Argyle was not so fortunate. The invading slavers then killed Argyle and enslaved the population of Rockopolis, (as a nearby holotape suggests), but his adventures live on in the radio plays sometimes hosted by Galaxy News Radio.