Twilight Williams

Twilight Sparkle Williams is the daughter of Adam Williams & Ashley Williams. She was mentioned in "Adam Williams arrives" when Adam told Phineas, Ferb, Candace & Isabella that Brendan kidnapped her & Spike and presumbably killed them, however, in Cupcakes Part 2, Twilight & Spike Williams were later revealed to be alive and rescued their father and his friends. They then made their guest appearance in "Will the real Twilight & Spike rise?" in My Little Pony and their father introduced them to his friends, Twilight & Spike, but Twilight Williams revealed to Adam that she & Spike knew them in "Cupcakes Part 2".