His voice box is damaged and tends to glitch from time to time, but his emotions can influence how much it glitches. The kind of emotion as well as intensity is both important, but generally some emotions impact the glitches more than others.
Least glitching (every few hours, maybe even a day or two.)
Calm
Happy
Excited/energetic
Sad
Frustrated
Afraid
Angry
Most glitching (Every few words, maybe even indecipherable at times)
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FNaF Headcanons (Mostly Daycare Attendant)
RandomJust some of my FNaF headcanons, nothing special