Geri

 is one of Desmond Lockheart's pet dogs who reside in Calvert Mansion in 2277.

Daily schedule
Along with Freki, Geri patrols the foyer and stairs of the mansion.

Companion
At some point during development it was intended that Desmond would offer Geri to you as a companion, similar to Dogmeat. It is unclear how far this idea progressed during development, but certain resources still exist in the DLC to go with this intended feature. In particular, certain script variables still refer to this option (such as the variable "DogFriend") and Geri is set to use some (but not all) of Dogmeat's dialog options pertaining to "adopting" him, as well as an AI package titled, though the package is only set to ensure Geri stays in the mansion.

Effects of player actions

 * Much to the furor of Desmond, both dogs are killed when Calvert Mansion explodes.

Appearances
Geri appears in the Point Lookout add-on for Fallout 3.

Behind the scenes
The names of the hounds are a reference to Norse Mythology. Odin was often portrayed as having two wolf companions named Freki and Geri. Freki roughly translates to "ravenous", Geri to "greedy".