Greasy's Diner was originally built in 1960 from crashed train parts .
In "Tourist Trapped," Mabel went there with "Norman" on a date. After fumbling with the knob of the door, "Norman" smashed the door's window and opened it from the inside after fumbling with the knob.
In "Dipper vs. Manliness," the Pines family go there for breakfast and Dipper ends up humiliating himself on the Manliness Tester. Grunkle Stan crushes on Lazy Susan, one of the diner's waitresses, but is too afraid to ask her out, so Mabel, Wendy and Soos all help him get out of his lazy stage and help him be more appealing. At the end of the episode, Lazy Susan slips her phone number to Grunkle Stan and in the ending credits, he receives several voicemails from her.
In "The Love God," Mabel sets Robbie and Tambry up on a date here. Though it doesn't go well at first, it turns around after Mabel sneaks some of the love potion she stole from the Love God into their order.
In "The Stanchurian Candidate," Stan walks into the diner during his run for mayor and is happily greeted by all of the patrons, even receiving a free stack of pancakes from Lazy Susan.
At the end of "Weirdmageddon 3: Take Back The Falls," Lazy Susan is seen cleaning up the windows, wiping off an image of Bill.
The outside of Greasy's Diner is in the shape of a fallen redwood log. There is even the stump of a redwood located on its right, as though the tree was chopped down right there and made into the restaurant. Underneath the main sign bearing the diner's name is a smaller sign with the slogan "We have food." Close by is a wooden pole with a light hanging from it, and a banner on one side that simply says "Eat." The diner is on a train car that is labeled "Gravity Falls 1883," with steps leading to the entrance and back door. Somewhere close by (a short walking distance away) there is a pay phone out in the open (as seen in "Society of the Blind Eye").
- Gray mustache man
- Deputy Durland
- Dipper Pines
- Mabel Pines
- Manly Dan
- Old Man McGucket
- Meredith's crush
- Love God
- Pizza Guy
- Robbie Valentino
- Soos Ramirez
- Grunkle Stan
- Sheriff Blubs
- Wendy Corduroy
Greasy's Diner is also home to the "Test Your Manliness" machine. This machine becomes central to the plot of "Dipper vs. Manliness." The harder you squeeze the handle, the more bulbs will light up. If one reaches "Manly Man," the prize is free pancakes. Dipper fails the test, but Manly Dan achieved "Manly Man" with only his pinkie finger, causing the machine to explode and shower everyone with free pancakes. Upset by this, Dipper decides to go into the woods to become more manly.
- 207. "Society of the Blind Eye"
- 209. "The Love God"
- 213. "Dungeons, Dungeons, and More Dungeons"
- 214. "The Stanchurian Candidate"
- 217. "Dipper and Mabel vs. the Future"
- 220. "Weirdmageddon 3: Take Back The Falls"
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