Hypernull/Zlib Exploit characters are basically chars that use a bug in a zip file to load the char in mugen before even selecting them, making them able to resist supernull chars like dsrugal, killall.
wiki for anyone that doesn't know what im talking about: https://mugen-cheap-community.fandom.com/wiki/HyperNull
0:06 _hell_
0:45 LetterS
1:31 Nihil
4:20 Ricordare-Zero
6:32 Aestheticdistortionist
7:48 Thelastearlysummerrain