Advice on how to do a demonic voice specific to this character?

[Trebor]

Slow (~0.5Hz sine) Flanger and hint of reverse-reverb.

Flanger

A “Flanger” effect changes a sound signal by introducing a short, cyclically varying delay into one or more copies of the signal and recombining them. This produces a sweeping comb filter effect, which typically sounds like a “swooshing” effect. Some versions of the effect, including this plug-in, include an option to feed a portion of the delayed signal back into the effect. [fullwindow-Flanger-000.png] Parameters: Maximum delay (ms): [0 to 10 (default = 1)] The maximum amount of delay app…