Nikki is smart, beautiful, sweet, and talented. When she moved she started to visit her neighbors, which Avery called sweet and dangerous. A lot of guys have a crush on her, as when she said people started to give her their phone numbers and e-mail addresses. When she saw Tyler she suddenly crushes him and accepted a date with him. She has a pomeranian named Evita. She thinks Evita and Stan are best friends (not knowing Stan dislikes her a lot). She believes Tyler is a dog whisperer. Avery and her agree that she can do everything.
Tyler is Nikki's boyfriend, as of "Dog Loses Girl."
Avery is Nikki's friend. Avery taught her how to whistle, which made Nikki like each other. However, they had a fight, and settled it but it is unknown if they are still friends.
- Dog Loses Girl
- According to Avery, she knows how to do everything but whistle, until Avery taught her.
- Nikki has a Pomeranian named Evita, who Stan dislikes
- Nikki moved from El Salvador.
- Nikki believes that Tyler can communicate with dogs.
- Nikki is an excellent artist (shown when painting a forest instead of a flower) and a dumb then smart whistler (shown when whistling Beethoven's Symphony #5)
- She was a little confused when she moved from El Salvador she thought was even Rose Queen and didn't even know it.
- Nikki is an incredibly talented actress.
- In Freaky Fido, Nikki does not hiccup; she "hoocups".
- In Dog Loses Girl, Nikki is good at being deceptive.
- In Lost in Stanslation, her hair color is black.
- In Dog on a Catwalk, its revealed that Nikki is not allowed to leave El Salvador because the president declared her beauty as a national treasure and to bring in tourists.