Maggie was a pet dog in Blade Runner (video game).
Maggie was purchased at some point by Blade Runner Ray McCoy, living with him in apartment 88F up to the events of 2019. Whenever McCoy came back home, Maggie would greet him cheerfully and McCoy would return the favor by giving her a treat.
There is ambiguity around Maggie being a real dog or not.
Events of 2019
When Ray McCoy goes to investigate dragonfly jewelry at Animoid Row, he has the option to purchase a necklace with the name Maggie on it from the dragonfly lady.
Capture and Death
Once McCoy is framed by Lieutenant Guzza for the murder of Izo, he becomes a fugitive and is not allowed in his apartment. When McCoy tries to go back, a shotgun armed thug named Rajif will tell him to leave or die, with Maggie no where to be seen.
When McCoy has enough evidence to confront Guzza, he can return to his apartment only to find Maggie dead, shot by Blade Runner Crystal Steele, or missing. If Maggie is missing, she will later appear in the kipple as McCoy hunts down Sadik and Clovis. Maggie will be used as bait in this instance and die when Sadik kills her with a bomb.