"Ahoy, Mateys I be Mangle!" is her intro. Like the other toy animatronics, she was released after the original quintet of haunted robots. She may possibly be related to Foxy and close friends with BB.
Mangle was first introduced in "IF FOXY WAS THE PHONE GUY 2", only making a small cameo on the night 3 phone call in the background, but she sounded like a male than her female voice now. This old Mangle voice almost made Eth not release the video.
over the months, Mangle started to play more games and gained her voice and personality she now has today.
*Mangle actually had two voice changes. In her second appearance when she played night 4 of FNaF 1, her voice almost sounded both male and female.
*In almost every tumbnail Mangle is present in, her second Endo head is too, but her second head never speaks.