Hibernation – The ability to slow down and/or cease bodily functions for long periods of time. This allows for the conservation of energy and/or the suspension of aging.
The Cthulhu and the Spawn of Cthulhu have large periods of inactivity during which their dreams effect humans (Field Guide to Cthulhu Monsters).
Doctor Strange – The Order #2
Superboy – Adventure Comics #312
Hibernation is used as a plot device to allow Captain America to travel from the Golden Age to the Silver Age in Avengers V1 #4-5.
Vance Astro (Marvel) provides a homage to Captain America’s hibernation in Guardians of the Galaxy V2 #2.
Next Hippopotamus Mimicry