The reasons Sunny Smiles has so many, ugh, "fans" are actually numerous. Sure sure, there's the Gooners, but she's such an important element of the New Vegas experience, even outside of her obvious role as the tutorial guide. I really like how she's written and designed as this laid-back wasteland chick, who has a dog and a home and is willing to fight for it. She introduces the player to the area and gives you the opportunity to learn about the zone and it's dangers, as well as it's rewards. She's especially cool, as all her content is skippable but most just enjoy engaging with her. She also introduces an apolitical standpoint on the region's conflict, which could spark a player's early interest into what could turn into a Yes Man ending.