NINTEN and SONY.

[retrolinkx]

In the original Pokémon games (I believe Red and Blue only), if the player begins a new game, and skips the naming process for him/her self and their rival, the names are set for the player being called NINTEN and their rival being called SONY. This isn't visible in normal play since you would usually pick the name for both characters beforehand, but using codes can skip the name entry and will make these appear in game.





Also I'm not sure if this has been posted yet...