Alongside the Wither, Elder Guardian, and Ender Dragon, and all their boss-level power, the other most powerful boss in Minecraft lore is a creature called the Warden. The director is located in an underground area called Deep Dark and Deep Dark Cities.
The crowd is completely blind, the first of its kind, and navigates via a sense of smell and vibration. That said, where can you find this mob in Minecraft 1.18 Caves and Cliffs Part 2?
Unfortunately, you cannot.
Related: All Mountain Changes in Minecraft 1.18 Caves and Cliffs Part 2
Guardians only spawn in cities in Deep Dark and Deep Dark, and these do not currently spawn in Minecraft. The only cave biomes added with the release of 1.18 were Dripstone Caves and Lush Caves. The Guardian cannot spawn in either of these, and so the addition of the Guardian was delayed with the addition of the Deep Dark.
The Deep Dark, its cities and its guardians will instead be released in 2022 with the next major update, The Wild Update.
For more Minecraft content, check out All Cave Changes in Minecraft 1.18 Caves and Cliffs Part 2 on Pro Game Guides.