Soos' grandmother first appears in "Gideon Rises," when Gideon's hostile takeover of the Mystery Shack forces Dipper, Mabel and Stan to move in with her. She is shown to be very tolerant of their presence, only asking to keep relatively quiet and cleaning any messes with a vacuum, including Stan messing up her lipstick after kissing her. Despite her hospitality, she is shown grappling with the difficulty of feeding both the Pines family and herself. Imediately following Gideon's arrest, Stan reclaims ownership of the Mystery Shack, allowing the Pines to move out of her house.
She is later mentioned by Soos in the short "Mabel's Guide to Dating," claiming his grandmother had always called him "the world's most perfect man". A picture of her hangs in Soos' room in the short "Fixin' It with Soos: Cuckoo Clock."
She is a very calm old woman, the years clearly having made her more apt to simply go with the flow. She has fairly simple wants and needs, desiring only quiet and cleanliness, as seen by her habit of instantly jumping to clean things the moment they're dirtied. Despite her somewhat sedentary behavior however, she's still quite aware of her surroundings, as she was quick to point out that she couldn't support the Pines' family for long with how much food she could afford. She speaks both English and Spanish.
- 120. "Gideon Rises"
- 205. "Soos and the Real Girl"
"Shh. Por favor."
"Would Mr. Pines like a..."
"I go vacuum my face."
- In "Gideon Rises," Dipper calls her Abuelita, which means "granny" in Spanish.