Blendin Blandin is a time traveler from the year 207̃012 (pronounced twenty-sñeventy-twelve) who was sent back in time to Gravity Falls in order to remove a series of time anomalies.
He appears again in "Headhunters," standing behind the crowd when Stan Pines unveils his wax figure. While Old Man McGucket questions Stan, Blendin picks up Dipper's shoe and quickly runs away. 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 is assigned to prevent several anomalies from occurring during the Mystery Fair. While he enjoys a ride, the twins steal his time machine and produce the anomalies he was sent after. Following their return to present time, Blendin is arrested by the Time Paradox Avoidance Enforcement Squadron for violating the "Time Traveler's Code of Conduct." He swears vengeance on Dipper and Mabel for stealing his time machine, promising to go back in time and prevent their parents from ever meeting. However, his plot must have failed, as the twins were still there. Later, the Time Baby, the presumable leader of the Time Paradox Avoidance Enforcement Squadron, forces him to clean up the time paradoxes the twins created.
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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