Kronos (WotUs)

Kronos was the youngest of the First Generation of Titans and eventually their Overlord after he killed his father Ouranos with the Symbol of Power: Megas Drepanon, in his own words his "virgin innocence was seduced by the ambitious Rhea" who sought to become the Queen of the entire Universe, Ouranos as he died foretold that Kronos would be overthrow by his own child however Kronos thought nothing of it until his mother Gaea confirmed it in a vision of the Future.

Kronos went to every attempt to make sure his children would not survive being born for long and consumed their essence where he planned for them to be eroded away by his essence over centuries, Rhea eventually betrayed him when she hid her youngest son however as years went on Kronos learned of Zeus and although he couldn't find him he did take revenge by cutting Rhea into millions of pieces with Megas Drepanon in a drunken rage, with the help of Hyperion he divided her pieces to every corner of the Universe and the spaces in-between the next day.

During the following years he met a youth of divine beauty and strength one day named Aello that caught his attention and desire almost instantly, seeking to replace Rhea he took the youth as his secret lover and a year later ascended the Demi-God to the position of his consort as a Titan, his power was greater than expected and Aello revealed that he was the son of Zeus and gave Kronos the location of Zeus' little Rebel army which abandoned its old location after a brief battle.

When Zeus freed his siblings and began the First Titanomachy in earnest, Kronos led the Titans against the proclaimed Olympians and willingly allowed Aello to stay out of the war knowing that without a powerful weapon he would be at a disadvantage against his powerful Father, Kronos at one point used Megas Drepanon to slice through the Hades' Pitchfork fearing the power of the three Olympian spear weapons together.

Kronos was eventually defeated and sliced into pieces by Megas Drepanon where he writhed in agony for many millenniums in Tartarus, however he escaped Tartarus by latching onto Percy Jackson and upon being led to Luke Castellan by the son of Poseidon he was stored in a magical Coffin following Lightning Thief, speaking through Luke whilst his body reforms as Megas Drepanon reforms within Luke's sword: Backbiter.

With the help of Aello, he rapidly reforms to a point, where any Vessel he takes will combust and to the point where he can retake his human form with Megas Drepanon in hand once again.

Trivia

 * Kronos' appearance, after his resurrection in the "Wrath of the Usurpers series", represents the fact that he his the youngest among the twelve oldest Titans.