"People don't understand the word ruthless. They think it means 'mean.' It's not about being mean. It's about seeing the bright, clear line that leads from A to B. The line that goes from motive to means. Beginning to end. It's about seeing that bright, clear line and not caring about anything but the beautiful fact that you can see the solution. Not caring about anything else but the perfection of it."
The Ellimist, also known as Toomin, was a Ketran male who, through a series of extraordinary circumstances, became almost omnipotent, god-like being. He played a game throughout the universe with a similarly-powerful being known as Crayak, with Crayak aiming to destroy worlds and the Ellimist endeavouring to save them. He frequently interfered in the Animorphs' lives, sending them to possible futures and distant planets, so as to help defeat Crayak. The Ellimist also used the Animorphs' Chee friend, Erek King, in his endeavors. When he appeared to the Animorphs, he tended to take the form of an elderly male humanoid with glowing blue skin, similar to the typical wizard or wiseman archetype.