Its not an enemy, its a force of nature
The Warden (Minecraft 1.17 -Caves and Cliffs, 2021)
Cthulu (The Call of Cthulu, 1928) [art by Andreé Wallin https://andreewallin.com/Misc-Client-Work]
The Iceberg (Titanic, 1997)
Galactus (Marvel-Universe)
The Bear (The Revenant, 2015)
Bruce (Finding Nemo, 2003)