Blendin Blandin is a time traveler from the year 207̃012 (pronounced twenty-sñeventy-twelve) who was sent back in time to Gravity Falls to remove a set of two time anomalies, although he didn't realize that it was actually Dipper and Mabel, instead of actual objects. Because he accidentally lost track of his measuring tape, which Mabel and Dipper borrowed, he was forced to remove the time anomalies that the twins left. He appeared in the episode "The Time Traveler's Pig".
He appears again in "Headhunters," standing behind the crowd when Stan Pines unveils his wax figure. When Old Man McGucket asks his question, Blendin picks up Dipper's shoe and quickly runs off. A photo of him can be seen on Dipper's list of suspects, though he is not visited by the twins.
His identity is revealed in "The Time Traveler's Pig," where he was assigned to prevent several anomalies from occurring during the Mystery Fair. While he goes on a ride, Dipper and Mabel steal his time machine and cause the anomalies he was looking for. Blendin then gets arrested by the Time Paradox Avoidance Enforcement Squadron for violating the "Time Traveler's Code of Conduct." He swears revenge on Dipper and Mabel for stealing his time machine by going back in time and preventing their parents from ever meeting. However, his plot must have failed because the twins were still there, unless he created a second (or really, his first) time paradox. Later, the Time Baby, the presumable leader of the Time Paradox Avoidance Enforcement Squadron, forces him to clean up the past.
Blendin is cautious and timid. He tries to hide his identity as a time traveler, however, he gives away his position when Dipper and Mabel approach him. Blendin reacts in a way that made him look suspicious, he then tries to escape although his time machine was not able to work. When he becomes nervous he sweats and he feels like he needs to confess something and also acts in a suspicious way. Around the end of "The Time Traveler's Pig," he turns from frightened and clumsy to angry and malevolent after the Time Paradox Avoidance Enforcement Squadron arrests him and Blendin swore revenge on the twins, threatening to make sure their parents never meet.
Blendin Blandin is a heavyset, light-skinned, bald man. He wears gray and cream goggles and a gray jacket, with simple white shoes. The jacket seems to have a form of camouflage that is controlled by a watch-like device worn on his left wrist. The wrist-worn device seems to be extra glitchy as it malfunctions most of the time, prompting him to steal Grunkle Stan's red screwdriver. On his tool belt, he has a time machine, a device similar in design to a tape measure. It is operated by pulling the tab out to a certain length that corresponds to a certain period of time. There are also two buttons to choose to go in the "past" or "future.
- Trailer: San Diego Comic-Con Trailer
- Intro: "Gravity Falls Main Title Theme"
- 101. "Tourist Trapped" (no lines)
- 102. "The Legend of the Gobblewonker" (no lines)
- 103. "Headhunters" (no lines)
- 109. "The Time Traveler's Pig"
- 120. "Gideon Rises" (no lines)
"AH! My position has been compromised! Assuming stealth mode! Color match. Initiating color match. Come on, dang it!"
"Uh, NO! Who told you that?! Memory wipe! (throws baby wipe)"
"You shut your time mouth!"
"Do you have any idea how many rules you just broke? I'm asking, I wasn't there with you. It was probably a lot, right?"
"Blendin Blandin, time anomaly removal squadron of 207̃012 (pronounced twenty-sñeventy-twelve)"
- His name combines the words "blend in" and "bland," as in, dull and unnoticeable.
- Him stealing Stan's screwdriver and using it to fix his watch is likely a reference to the sonic screwdriver in Doctor Who, a popular British science-fiction television show about time travel.
- He is set to return in Season 2. 
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