As you make your way to San Fierro, you will come across a down on his luck NPC named Zero. He runs a shop that sells remote-controlled vehicles and can’t pay his rent, so you are able to purchase the shop to help him out. This opens up a series of optional side missions, which contains one of the more frustrating ones in the game. However, inside of his shop, there’s a number of things that are Easter Eggs for other games in the series, as well as other Rockstar games.
For example, there are various models of vehicles from San Andreas itself, such as the NRG-500, ZR-350, and the SWAT. If you look on the one rack, though, there are action figures of various characters from other games. This includes Tommy Vercetti and Lance Vance from Grand Theft Auto: Vice City, as well as James Earl Cash and Piggsy from Manhunt. Oddly enough, though, Manhunt takes place in 2003, which means that those figures shouldn’t exist in the shop, due to San Andreas taking place in 1992.