Tracey was created to steal Robbie's bike as part of the plan to win Wendy's affections. After he voices concerns that Robbie would catch him, Dipper agrees to create another clone, which gets caught in a paper jam. Tracey refuses to work with Paper Jam Dipper, so Dipper creates another clone, Quattro. Later, Tracey and Quattro steal Robbie's bike and ride away. They aren't seen during the clone fight. But if you look closely in Summerween, you'll see that someone else is in the Summerween Store with the same shoes as Dipper. This person is Tracey.
In Soos and The Real Girl, Quattro can be found in the background of Gravity Malls. Tracey and Quattro are seen in the credits of Weirdmageddon 3: Take Back The Falls, wearing raincoats in order to survive. Tracey is playing the banjo. While Quattro is reading a book.
Just like the other Dipper clones, their personality is exactly the same as Dipper. Although they both like plans more, as evident by the chart in Journal 3, also like the other clones. They also hate Dipper for what he did to the rest of the clones and are supposedly plotting revenge according to the Cryptograms in Lost Legends.
Tracey and Quattro are both exact copies of Dipper, and so look exactly the same, albeit with paper skin, hair and clothes in more desaturated colors. They have numbers instead of pine trees, numbered 3 and 4 respectively drawn in black marker. They always wear rain jackets in case it rains because any kind of liquid is their kryptonite.
"Come on! You're not gonna partner me up with him are you?"
"Oh no! Paper jam"
"I get on my nerves sometimes"
"YOU'LL NEVER GET US!"