Mechagodzilla is the mechanical counterpart to Godzilla in the Monsterverse, appearing as the climactic threat in Godzilla vs. Kong from 2021, where a human-built machine Titan is unleashed against the two monsters. The character has a much longer history in Japanese kaiju cinema, but this Monsterverse version gave it a modern, industrial sound that fans quickly clipped and shared. Since then, the short roar has circulated on soundboards and in fan edits as shorthand for a powerful robot villain arriving.