|Holotome Profile: Overlos|
|Special Ability||Dimension Rift|
|Users|| Lord Casterwill|
|First Appearance||"The Mission"|
|Last Appearance||"The Mission"|
|Gallery | Cards | Appearances|
Overlos is the Legendary Titan of Immortality and is presumably the most powerful Titan in the series. It is a large Titan with six eyes, a flaming head, golden armor, a shield resembling the Amulet of Will, a spear, and wings.
Overlos's history is largely unknown other than the fact that it resided in the Spirit World until summoned in a ritual using the Amulet of Will and the three Legendary Titans. It is possible that Overlos was the first Titan summoned to Earth, explaining how The Amulet of Will was created and how Lord Casterwill summoned the other Titans.
The Professor attempted to use this Titan to gain immortality but failed due to the interference of Lok Lambert and Cherit. At the request of Lok, Overlos opened a gate to the Spirit World and took the three Legendary Titans with him.
The extent of Overlos's powers are unclear; however, it has been shown to have the power to grant wishes, even that of immortality, to any Seeker who calls upon it. Overlos is powerful enough to be immune to the effects of Dendras' ability to control Titans. Overlos has displayed the ability to remove curses set by the Legendary Titans, and Overlos even has the ability to tear open portals to the Spirit World.
- Overlos can only be summoned by having the three Legendary Titans Behemoth, Tao, and Araknos perform a ritual with the Amulet of Will.
- It appears that his design is similar to a painter, with the shield possessing four different coloured splotches and the staff possessing a sharp point similar to a paint brush. His staff also reminds of a pharaoh's symbols of reign.
- Overlos' summoning command is 'Grant my wishes'.