5. Sunny Smiles (New Vegas)
Sunny Smiles might sound like a flowery, harmless character, but she is in fact a town guard stationed in the Mojave Wasteland in Goodsprings. She may not be a major character in New Vegas, but she was memorable as one of the series' strongest female characters, one who helps the Courier get to grips with the dangers lurking in the Mojave Wasteland. Sunny is also memorable for her pet attack dog Cheyenne, who will help protect the player, though will also turn on the Courier if you decide to kill Sunny. Sunny is also, for some reason, ever so slightly smaller than most of the other NPCs, only adding to her distinctive character. Though she didn't serve a
grand purpose, it'd be great to see her and an aged Cheyenne still kicking about somewhere.