The effect comes from Toho, the Japanese studio behind Godzilla and the Showa era kaiju films produced from the mid 1950s to the 1970s. Those low budget productions reused a library of dramatic effects for beams, explosions and electrical attacks, giving many different monsters a shared sound language. Fans later ripped and shared the clips online for fan films and edits, where the recognisable crack became shorthand for old school Japanese monster action. It remains popular because modern clean thunder cannot recreate its theatrical, handcrafted energy.