Tyler "Ty" Mendosa was a neighbor of the Vasquez family when they lived in East Riverside and is one of the two main male figures (the other being Emmett) in Daphne's life.Regina used to have Ty take Daphne to screenings of Deafenstein at Carlton.Regina said it was in case Daphne got scared but was actually just trying to keep Ty out of trouble.In This Is Not a Pipe, he is confused and suspicious when he sees Bay in the neighborhood, and accuses her of trying to score some pot because in his mind that is the only reason a "rich white girl" would ever be in the neighborhood.
Ty says he won't say anything then and the two begin to make out. John uses his connections with a military general to ascertain that Ty is safe, which relieves both of his daughters. The two talk about the Hammer Girl Bay gave him (he put it on his unit's tank), and Bay tells Ty that she is dating Emmett Bledsoe. In Mother and Child Divided Bay's car breaks down right outside a theme park, Maui Kansas.Bay goes inside and begins to play a shooting game at a booth while she waits for AAA.Ty walks up behind her and gives her instructions and together they get a great score. Ty tells Bay he finished his tour and is finishing his enlistment on the base.The night goes well until Ty's car won't start and Bay has to call Toby to avoid another stint of grounding for missing her curfew.After finding out Ty's pay was docked (preventing him from being able to buy parts to fix his truck) because he couldn't get to work on time because of his truck, Bay goes back to East Riverside with enough money to buy Ty's truck part but he rebuffs the offer, maintaining he is not a charity case that needs "Daddy's money" to bail him out.