Tink is the bass player for the band "The Bettys" She is the one with the blond Mohawk. ("Ready for the Bettys")Like her fellow bandmates, she made Candace Flynn and Stacy Hirano do their chores on their tour bus. However, they apologized in the end. When the bridge in front of the bus is destroyed, Candace goes to the front to try and save it. Phineas and Ferb who happen to be riding Perry's spy car activate their magnet ray to save the bus, but the car doesn't have enough power. Then, Perry goes underneath and lifts the bus up with mechanical hands. The band, however, thinks that Candace saved them, and honored her by letting her sing on stage with them.
She is most likely a parody of Pink, given her name and hairdo.