If the player uses Jigglypuff's up throw on one of the opponents, it will OHKO them. This can be used to complete the event quickly.
If Jigglypuff uses Sing on this stage while the screen in the background of Pokémon Stadium is focused around it, all three of the other Jigglypuff on the ground will fall asleep, and for much longer than they usually would. This easter egg is known as "Sleepy Time".
The number of this event is the same number as Jigglypuff's number in the National Dex in the Pokémon games: #039.