Create a chilling scene featuring a sinister yellow animatronic character

Create a chilling scene featuring a sinister yellow animatronic character, resembling a twisted version of a cheerful mascot. The character should have unsettling, wide eyes with an eerie glow. In its hand, it clutches a dark, menacing cupcake with a devilish grin. Surround the scene with shadows and fog, enhancing the atmosphere of dread. The background should be dimly lit, suggesting an abandoned, haunted environment, with hints of decaying animatronic parts lurking in the darkness, based on Five night a'ts Fredddy