A/N: This is not The Tales of version of Percy Jackson and the Greek Gods or Percy Jackson and the Greek Heroes, but rather The Tales of version of a book I got of Greek and Roman Mythology I got in Rome Italy. The settings will be after 'The Tales of the Heroes of Olympus: The Blood of Olympus' so please read that before getting in this story. Think of this story as something to pass by until The Trials of Apollo books.
Alcyoneus
There is only one giant bane I got respect for and the first Alcyoneus isn't him. If anything I got nothing but anger toward the guy for what he put my friend Hazel through. But that's a different story.
First off, the old stories didn't depict Alcyoneus as son of Tartarus but a giant child of Gaia and Ouranos. Although if his fellow giant siblings found out they probably look down upon him since they see any child Gaia had with Ouranos as among her lesser children aka weaker, and Alcyoneus wasn't weak-at least not in the land he was born from (or later on reborn in). See as long as he stayed on the ground he was born, he was invulnerable. Every time he was felled he drew strength he needed from merely touching the earth of his birth place.
He actually had a role in the battle between the giants and the gods, and attacked Heracles as he returned from Erythia with Geryon's cattle. But Heracles figured out Alcyoneus' strength and took him far away from Pallene and shot him dead with an arrow after Alcyoneus had crushed twenty-four of Heracles' companions to death with enormous rock.
It turned out Alcyoneus had daughters and upon his death they threw themselves into the sea and were changed into Halcyon.
Yep, the story of the first Alcyoneus ends with girls being turned into birds. But we still have one more Alcyoneus to cover.
Now this guy wasn't evil as far as I know. But he was the key to the defeat of the monster Lamia the first time around, or in some myths Sybaris.
The story goes the monster was terrorizing the area near Delphi, which of course got Apollo's attention. Apollo told the inhabitants to offer a young man as a sacrifice to the monster. That man was Alcyoneus. He was crowned and led in procession toward the monster. But then a nobleman named Eurybarus saw this, fell in love with Alcyoneus, and offered himself in his place. His offer was accepted. On But on reaching the monster's lair Eurybatus shattered its head on the rocks, and henceforth a spring called Sybaris gushed forth from its place.
I never fought Lamia, but I know a son of Hecate that did, but I doubt the story would help him since the Doors of Death was open and Thanos was captured at the time so monsters regenerated quickly.
Next up is a half-brother of mine who tried to steal the cattle from Heracles along with his own brother. I doubt he had any luck, but wait and see for yourself how bad it goes.