Kronos - Alive as pieces

Poseidon gripped his trident. “In the First War, Percy, Zeus cut our father Kronos into a thousand pieces, just as Kronos had done to his own father, Ouranos. Zeus cast Kronos’s remains into the darkest pit of Tartarus. The Titan army was scattered, their mountain fortress on Etna destroyed, their monstrous allies driven to the farthest corners of the earth. And yet Titans cannot die, any more than we gods can. Whatever is left of Kronos is still alive in some hideous way, still conscious in his eternal pain, still hungering for power.”
“He’s healing,” I said. “He’s coming back.”
Poseidon shook his head. “From time to time, over the eons, Kronos has stirred. He enters men’s nightmares and breathes evil thoughts. He wakens restless monsters from the depths. But to suggest he could rise from the pit is another thing.”
“That’s what he intends, Father. That’s what he said.”

***

The Lightning Thief, Chapter 21