Robbie Valentino

Robbie is Wendy's boyfriend, who first appears in "Headhunters." His greatest claim to fame is a giant explosion he spray-painted on the water tower (along with other spots around Gravity Falls), which Dipper thinks is a giant muffin. Because of this, Robbie grows to dislike Dipper and tries to exclude him from the group due to his age.

In "The Time Traveler's Pig", Robbie becomes Wendy's boyfriend which only further fuels the rivalry between him and Dipper.

History
Robbie is first seen riding up with Wendy's other friends to pick her up. He is then seen as they drive to the Dusk 2 Dawn convenience store. During the group's stay at the store, he acts very condescending towards Dipper. He makes fun of Dipper when he hesitates to jump the gate, and doesn't think Dipper can get them inside the store when Robbie's efforts to open the door prove to be pointless. Once Dipper gets the kids inside, he is seen partying with the rest of them. Once the ghosts attack, he is one of the only teenagers not to be taken. However, he is not seen when Dipper does the Lamby Lamby Dance to save the group.

He next appears in "Double Dipper" at the Mystery Shack party hanging out with Wendy. He ignores Dipper and shows Wendy his new guitar. Seeing him as an obstacle between him getting to dance with Wendy, Dipper and his clones lure Robbie away from the party by stealing his bike away from him. However, at the end of the episode, Robbie comes back and chats with Wendy, ruining Dipper's plan.

Robbie starts dating Wendy in "The Time Traveler's Pig", which sets up the plot for Dipper to start time traveling to prevent it. Later when Dipper successfully wins Wendy a stuffed animal, Robbie becomes jealous and walks away, pretending to not care. When Mabel's enemy, Pacifica, took Mabel's pet pig, Dipper decides to time travel back again after he realizes he'll break Mabel's heart if he doesn't. This makes Robbie date Wendy in the present time.

In "Fight Fighters", Robbie is officially stated to being Wendy's "boyfriend". While putting up flyers for his band, Robbie notices Dipper's crush on Wendy, and he tries to call Wendy to tell her Dipper's secret. However, Dipper breaks Robbie's phone to prevent this from happening, causing Robbie to challenge Dipper to a fight at 3:00. When Dipper unleashes Rumble McSkirmish from an arcade game, Dipper uses Rumble as a bodygurd to scare off Robbie and put a stop to the fight. When Rumble encounters Robbie, he nearly kills him. Dipper tries to stop Rumble from seriously injuring Robbie, and he successfully does so by facing Rumble in a battle. Robbie decides not to fight Dipper afterwards, and the two decide to hate each other in silence, rather than to physically show their anger.

Robbie is seen again in Summerween, visiting the Mystery Shack with Wendy. The two inform Dipper of a party later that evening (thought Robbie doesn't seem very enthusiastic about telling him). Robbie seems extra moody in this episode; he spends most of his screentime talking down to Dipper, and is even punched in the arm by Wendy because of it. In the end of the episode, Wendy mentions him again; apparently they had to leave the before mentioned party early, because Robbie swallowed a lollipop stick first and got sick.

Personality
In terms of personality, Robbie is a stereotypical moody teenager: Laid back and apathetic. He is seen as condescending to people younger than him, as shown by his interactions with Dipper. In "The Time Traveler's Pig," he asks Wendy to go out with him and she agrees, right in front of Dipper. Robbie is anxious to date Wendyjust like Dipper, and seems very nervous about asking her out. Robbie loves feeding his ego. In "Fight Fighters", Robbie boasts a lot, and doesn't hesitate to show off. (i.e. He makes sure to mention the fact that Wendy is in fact his girlfriend, he boasts about his band, he belittles Dipper, etc etc).

Appearance
Robbie has black hair in a typical eye-covering "emo style", pale skin and piercings. Like some characters on Gravity Falls, he has a pink nose. He wears a black guitar around his chest. His pants are blue with silver keys attached to his belt loop. He wears tight jeans. He also wears a black hoodie with a picture of a red bleeding heart with a scar on it, along with black fingerless gloves. He has sparse stubble (two strands of small hairs) on his chin, and a few pimples scattered around his face.

Trivia

 * In "Double Dipper", Dipper clones 3 and 4 stole Robbie's bike, but didn't return in the episode.
 * The stitched heart logo on his jacket appears in the opening song Made Me Realize on a photo of a page of the journal that has to be freeze framed to see along with other symbols associated with other characters.
 * Robbie's band is called Robbie V. and The Tombstones.
 * Robbie was in the list of suspects in Headhunters.
 * Similar "Explosion Muffins" to the one that Robbie spray painted on the water tower appear through out the show in various backgrounds, most noticeably in the enclosure around the water tower.

Quotes
"Yeah, I'm the guy who spray painted the water tower."

- Robbie

"Sorry, kid, I ride shotgun, alright?"

- Robbie

"Maybe I will, smart guy."

- Robbie

"My pants! They're shrinking!"

- Robbie

"Uh, it's eye paint for men."

- Robbie's excuse for wearing mascara

"You wanna get into it, huh? Well let's get into it!"

- Robbie