This clip comes from a user-generated soundboard with no credited original source, which is common for synthesized sci-fi effects that circulate as production-style assets. The filename describes exactly what it is: a short digital roar with cyber and electric processing meant to suggest a robotic creature. Sounds like this spread because short, punchy machine roars are easy to drop into gaming montages, robot animations and tech-themed memes. Editors keep using them because a six-second mechanical growl instantly sells power without needing dialogue or music.