He first appears in "The Legend of the Gobblewonker" at the opening day of fishing season at the lake along with other residents of Gravity Falls. He follows Manly Dan's boat and cheers for him as he catches a fish from underwater and starts punching it.
In "Headhunters," when Dipper interrogates Manly Dan on the murder of Wax Stan in Skull Fracture, he walks up to Manly Dan and starts to cheer him on as he rips off the robotic arm from the arm-wrestling machine and starts beating the machine with it.
He appears once again in "Dipper vs. Manliness" at the Mystery Shack, wanting to get his Christmas shopping done early, and asks Stan that there's anything in "the spirit of the season." Grunkle Stan shows him a bowl full of "crystals" and he remarks, "Ha, ha, looks like broken glass." Stan asks him, "What are you, a cop?" He is also seen looking at a fur trout and asks if Stan has it in a different animal. Eventually he is locked inside the Mystery Shack so that Mabel, Dipper, and Grunkle Stan can go to Greasy's Diner, and Tyler is seen trying to decide between buying a puma shirt or a panther shirt, which are the same animal.
In "Gideon Rises," he is among the disappointed townspeople when it is revealed that Gideon has been spying on the entire town to compensate for his fake psychic abilities. As Sheriff Blubs is about to arrest Gideon, the officer turns to Tyler for his cue. He tearfully says his catchphrase, "Git 'em, git 'em!"
In "Scary-oke," he attends the party wearing a shirt that's half the puma and half the panther designs from the shirts in "Dipper vs. Manliness."
In the "Little Gift Shop of Horrors," Tyler runs a stall selling wind chimes called "Sev'ral Chimez," a reference to Sev'ral Timez. Later, he is seen at the bowling alley where he trips over a bowling ball accidentally thrown by Stan.
In "Northwest Mansion Mystery," when the doors are open to common folk such as him for the Northwest Fest, he says "git it, git it," and storms into the Northwest Manor along with the rest of the crowd.
In "Not What He Seems," as he is walking through town, the Universe portal causes Earth to lose its gravity, and thus he and the others are rose from the ground but falls back down shortly after. As Tyler wonders what happened, he believes the Earth hiccupped, but Lazy Susan assures him that it was probably just a baby-sized earthquake, and Tyler responds by saying, "Aww, baby-sized!"
In "A Tale of Two Stans," his younger self is shown cycling in front of Stanford's cabin with his mother. The portal causes a blackout and beams of light to escape the shack. Later, he visits the Mystery Shack (or Murder Hut) as one of its first customers.
In "The Stanchurian Candidate," he appears as one of the candidates for mayor of Gravity Falls. At the end of the episode, he becomes mayor as he was the only eligible candidate due to Stan Pines having a large criminal record and Bud being possessed by Gideon. Also, Tyler was the only candidate who actually filled out their paperwork.
Tyler appears to be good-hearted and nice. He is seen as a bit of a scatterbrain, not knowing what to buy when he visits the Mystery Shack. He acts flamboyant and he is also noted for being very effeminate and indecisive. He is a bit odd, due to doing his Christmas shopping in the summer. He often encourages characters to fight and cheers their crazy actions on by saying "Git em', git em'!"
Tyler wears a green and white trucker hat similar to Dipper's (without a pine tree), a white (pale green in earlier episodes) tank top with a very low neckline, blue jean shorts, a belt with a large buckle, and large brown boots. He has light brown hair, a mustache, some chest-hair and small visible eyelashes similar to Mabel's.
- Intro: "Gravity Falls Main Title Theme"
- 102. "The Legend of the Gobblewonker"
- 103. "Headhunters"
- 104. "The Hand That Rocks the Mabel"
- 106. "Dipper vs. Manliness"
- 108. "Irrational Treasure" (no lines)
- 109. "The Time Traveler's Pig" (no lines)
- 115. "The Deep End"
- 117. "Boyz Crazy"
- 120. "Gideon Rises"
- 201. "Scary-oke"
- 204. "Sock Opera" (no lines)
- 206. "Little Gift Shop of Horrors"
- 208. "Blendin's Game" (no lines)
- 209. "The Love God" (no lines)
- 210. "Northwest Mansion Mystery"
- 211. "Not What He Seems"
- 212. "A Tale of Two Stans" (flashback)
- 214. "The Stanchurian Candidate"
- 215. "The Last Mabelcorn" (pictured)
- 217. "Dipper and Mabel vs. the Future" (no lines)
- 218. "Weirdmageddon Part 1"
- 220. "Weirdmageddon 3: Take Back The Falls"
"This is going to be adorable!"
"Looks like broken glass!"
"Puma shirt, panther shirt, puma shirt, panther shirt, puma shirt... panther shirt."
"Do you have this in another animal?"
"Is it just me, or did the entire world just hiccup?"
- Tyler has begun decorating his mansion with artisanal wind chimes.
- He plans to fight crime with his new “Cut That Out, Guys!” initiative which mainly involves putting pictures of himself in high crime areas making an adorable, pleading face.
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