Geronimo appears for the first time in the video Fallout New Vegas Mods: Angel Park - Part 1. 
Through AlChestBreach's lively imagination, Geronimo has been given a unique personality, like most companions. In the loading screens he will commentate the situation. For example, when AlChestBreach had accumulated a large number of followers, Geronimo commented on the likeliness that the game would crash when they walked into a small tunnel.
- Geronimo is the first "companion" gained by Al in his Fallout New Vegas playthrough.
- In Al's second playthrough of Project Brazil, Geronimo's ball was replaced with a line, much to Al's dismay.