Light eco is one of the six colors of eco in the Jak and Daxter series. It is a rare, pure substance, created by combining all four colored ecos, and is the direct opposite of dark eco. It was only seen in The Precursor Legacy, Jak 3, and The Lost Frontier.
There are no known sages of light eco, though considering that it is made of all colors of eco excluding dark, leaves it without a necessary sage.
The Precursor LegacyEdit
In The Precursor Legacy, Jak used light eco to defeat Gol and Maia's Precursor robot. It was formed when four towers surrounding the dark eco silo each emitted laser-like beams of red, yellow, green, and blue eco and create a large, white, cloud-like object. Upon collecting it, Jak was able to use a newfound power to destroy Gol and Maia and save the world. When Jak uses light eco to destroy the Precursor robot, he seems to launch a blast similar to yellow eco from his hands.
From the characters' dialogue, it is clear that this type of eco has been foretold of and that it has immense power. Gol is amazed: "It does exist!", and Maia is scared, knowing that it is the key to their destruction: "They must not be allowed to get it!".
The oracles speak of "the light" in Jak, however this is unlikely to be relating to his abilities to channel light eco. In addition, this type of eco should not be confused with references to "the pure light" etc., as this is almost always referring to the rift gate where "the answers reside".
Daxter believed that light eco had the ability to transform him back into a human, however he never came into contact with it as it was more important for Jak to use it to destroy the robot. The events of Jak 3 would suggest that his assumption was untrue since he was likely exposed to light eco whenever Jak was powered up with it.
Light eco was briefly mentioned in Daxter. Veger, when discussing the Dark Warrior Program with Erol in the Haven Palace, mentioned a desire to create light eco warriors opposed to dark, saying that "light eco is the key", and calling it the "power of the Precursors".
Light eco made a reappearance in Jak 3 after the Precursors gave Jak control of light eco powers in the wake of the oncoming threat that was the Dark Makers. This also helped balance out the dark eco in Jak. These light powers were used to aid in defense opposed to offense (like Dark Jak's powers) including a shield, regeneration, wings, and more. Jak also collected light eco crystals to power the Planetary Defense System in order to destroy the Dark Maker ship.
The Lost FrontierEdit
Light eco was used to repair the eco seeker in The Lost Frontier after a small cluster of it was found by Keira at the abandoned research rig. Light eco was only seen once in the form of a small cluster.
Light eco came in three basic forms; cluster, large cloud, and through vents. In cluster form, light eco appeared as a small white droplet with a blue glow around it. In cloud form, it appeared as a large, thick white cloud with various colored sheen around it resembling and oily substance. When dispersing from vents, it appeared as a pure, translucent, blue beam.
Light eco crystalEdit
Light eco crystals (and its similar dark eco counterpart) appear as a component to a yin-yang-like shape, with a Precursor metal base and a light eco crystal embedded in it.
In The Precursor Legacy, as soon as Jak picked light eco up, a cutscene initiated as Jak destroyed Gol and Maia's Precursor robot. He did show incredible strength by doing it with a single attack, but he did not show any other abilities.
In Jak 3, Jak could transform into Light Jak, giving him defensive and regenerative abilities. These abilities include Flash Freeze, allowing Jak to slow time down, Light Regeneration, which uses light eco to regenerate Jak's health, Light Flight, allowing Jak to briefly ascend into the air, and Light Shield, allowing Jak to cast a shield on himself. These abilities could be activated with any amount of light eco in Jak's light eco gauge.