Put it at the exact frame a huge character or machine appears, then follow it with the WTF Boom Sound Effect for a second hit of impact. If the reveal ends on a cliffhanger, close the edit with JoJo To Be Continued instead of letting the moment fade out.
关于此声音
This two-second clip is Metal Gear REX's first roar, a deep mechanical growl that mixes an animal-like bellow with grinding metal and whirring servos. It feels tense and threatening, like an enormous machine has just woken up and turned toward you. It comes from Metal Gear Solid, first released in 1998, where the nuclear-armed walking tank makes its dramatic introduction.