Cedric

Cedric is The Author's son. He helps Niko go from the Glen to the Refuge with the flying machine. He has white hair, a black hat with a feather on the left side, a pair of goggles with green lenses over his eyes and a smaller pair wrapped around his hat.

Background
He, Proto, Rue, and the Author were all "real people", in that they all lived in the Old World. After the Old World was shattered, they where all saved as code in The World

Trivia

 * The name was first discovered as a leak in the OneShot Discord server's datamining channel.
 * GIR jokingly stated that the character's true name was Gliko/Bliko and that the leaked name Cedric was just a placeholder.
 * It is speculated that he and Rue are robots. This is due to the fact that if Niko talks to Proto before speaking to anyone else, Niko asks Proto what it's like being a robot, however Cedric and Rue also respond to Niko's question.
 * This is further reinforced by this tweet by Nightmargin.
 * According to Nightmargin, Cedric's age is around 16-17 but he appears younger than that.