This sound is from Lelouch Vi Britannia Soundboard

Lelouch is a former prince from the superpower Britannia who is given the power of the "Geass" by a witch known as C.C. C.Lelouch has appeared in multiple related adaptations and spin-offs.
See also: List of Code Geass characters, Code Geass, Code Geass (season 1), Code Geass Lelouch of the Re;surrection, Johnny Yong Bosch, and Code Geass (season 2).