Soos (aka Jesús)(voiced by Alex Hirsch) is the lovable and friendly man-child who works at the Mystery Shack gift shop. He's a good friend of Dipper and Mabel Pines. He and Dipper enjoy doing so-called "boy stuff" together, like heating hot dogs, one by one, until they explode in the microwave.
Soos is a portly, friendly, and lovable employee whose desire to be where the action is makes him an excellent resource for the twins when they need a ride about town. Aside from the kids, he’s the only other person who sees and believes all the strange things happening in Gravity Falls. He said he "thinks the mailman is a werewolf," but instead it is just the mailman is very hairy. This shows his eager and inquisitive nature. Soos also has a good relationship with Mabel Pines, as they even have a secret handshake. Dipper likes him as well, but can get mad at him easily, as shown in "The Legend of the Gobblewonker". Soos visits the cyberchase fighters sometimes and loves to go on adventures with them.
- Jeffrey, Jaden and Hiccup will meet Soos in Jeffrey, Jaden, Hiccup & Friends go to Gravity Falls.
- Twilight, Sunset and Kyle will meet Soos in The Rainbooms and The Z Fighters go to Gravity Falls after the events of "My Little Pony Equestria Girls: Legend of Everfree" and "Equestria Girls: Magical Movie Night".