Deep, Deep Hell

Deep, Deep Hell is an anomalous level within certain copies of Super Mario 64, olistepsforward is imprisoned here for his crimes against humanity.

The level was mentioned for the first time by the user SigmaShield in the MIPS hole discord, with the level appearing in copies thereafter. This furthers the theory that MIPS hole can create anomalies within Super Mario 64.

Geography
Hell

olistepsforward is in a cage often within the middle of the level, and has AI-generated ramblings about things such as "Changed 64, Femboy 64, and Furry 64" though it's unknown what such ramblings mean. At this point, it is recommended to reset, as he continues speaking seemingly forever.

Theorizing
This level likely exists to keep the horrors of olistepsforward contained from the rest of Super Mario 64, as he is reportedly responsible for making 100% of all Changed 64 copies that have been released.

Another plausible theory is that this is olistepsforward's punishment for facilitating the 2020 Ghost Femboy Incident, though this is unconfirmed.