Navi

Navi is a mysterious universal being, and one of the main characters in the 2017 PS4 and PC game "Birthdays: The Beginning". It was released from "the giant cube", and helps and guides the Avatar into how to create the worlds.

Description
Navi's race is mainly shown as a simple shape. In this case, Navi is presented as a bright blue diamond.

Backstory
Very little is known about Navi and its backstory. What is known is that it has a sort of relationship with "the giant cube", and it once was able to grow its own worlds but as of current it is unable to do so by itself. And as such needs help from the Avatar to do so.