Echo

Echo
Echo is a semi-important protagonist in LUTK Invasion. She was another Demi-God created by Pureegee, and was the sibling of Aurora. It's been hinted that she has been in exile for an unknown reason as she had not seen anyone for several years. At least until Lutk had arrived, and fought her after she refused to join him. After that encounter with him she had been helping the heroes ever since.

LUTK Invasion
It's been hinted at by Echo's quotes that she had been exiled, and alone for several years. As she states she hasn't seen anyone for several years, until Lutk appeared. It's unknown how or why she would be exiled, but once Lutk appeared he offered her to join him in killing all life, but she declined and he threatened to kill her. In response to this she attacks, and fight him. During the fight with Lutk she was easily beating him even with the Reaper form he had, but luckily for Lutk. His brother Mutk grabbed her, and held her in place for Lutk to attack, but Echo was saved by Cyro when he punched Mutk in the face. She then assists the heroes fight Cross Mutk, and in order to fight him she transforms into her Oceanic form with Aurora, but eventually they forced Mutk, Lutk, and Sqeegee to retreat. Later, she helped the heroes fight Sqeegee however her efforts weren't helping much (even though she hadn't transformed into her Oceanic form yet). It's to be assumed she followed the heroes in space after Sqeegee was blasted out of the planet by Weegee.