Atmospheric, Drone, calm and relaxing slow moving harmonic textures, good underscore for uplifting ...
Creatures, Robot, CU mechanical alert or response, can be used for weapon impact
Computer Scan or acknowledgement, alert or processing
Low-pitched metallic wash, ominous-sounding.
Impact Boom, Mid Harmonic metallic boom or punctuation
Musical metallic scrape, tonal high pitched shrill shimmer
Creatures, Robot - Alien Robot Transmission 2
Creatures, Robot, robotic response or alert
Body scan, can be used for instrument or power switch
Ascending metallic wash, high pitched shimmery with metallic overtones and long tail