HP drain glitch (Pokémon Ruby and Sapphire)
There was already an existing video of this glitch, originating from pokeglitch but the only footage I could find of the glitch was from a hack. In Pokémon Ruby and Sapphire, if you deal exceptionally large damage on a Pokémon then the Pokémon may faint without having its HP bar drained. I believe you have to hit at least 33,037 damage, when testing with Endeavour and enemy Pokémon hacked to have extremely large current HP (33,036 didn't work). A +1 Sp. Atk Water Spout on Geodude triggered the glitch, but without any Calm Minds it didn't (one Calm Mind dealt something like 36k damage). I don't know what's significant about the number 33,036 though, I tested with Shedinja and I still had to deal damage that high.
Not shown in this video is a variation of this glitch (untested legitimately) which is extremely difficult to pull off without cheating. If you hit exactly 33,037 damage, the HP bar falls to 0 instantly without any delay.
This glitch was patched (at least the 33,037 method) as of Pokémon FireRed and LeafGreen I believe.
Other Videos By Evie (ChickasaurusGL) 🌺
Other Statistics
Pokémon Ruby and Sapphire Statistics For Evie (ChickasaurusGL) 🌺
At this time, Evie (ChickasaurusGL) 🌺 has 601,972 views for Pokémon Ruby and Sapphire spread across 22 videos. The game makes up 2 hours of published video on his channel, or 1.58% of the total watchable video for Pokémon Ruby and Sapphire on Evie (ChickasaurusGL) 🌺's YouTube channel.