videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Donkey Kong Country 2 GBA Boss 4 : King Zing (no damage) HD, Zelda The Wind Waker Boss 1 : Gohma (no damage), Super Smash Bros Brawl Boss 1 : Petey Piranha/Flora Piranha (intense mode, no lives lost)