Creation. All Titans were originally humans of a race of people called the Subjects of Ymir. ... Subjects of Ymir being injected with Titan spinal fluid Subjects of Ymir used to become Titans after being injected with Titan spinal fluid, triggering a near-instantaneous transformation.

What is a Titans body made of?

Titan's bodies are actually made up of some type of gaseous substance that weighs nothing. While alive, with its "power source", the gaseous substance takes on the form of solid flesh-like material, but still incredibly light. Without this "power source", the flesh returns to the gaseous state and evaporates.

What Titan can create Titans?

It has been noted that the Beast Titan is the "strongest" Titan. Furthermore, Zeke possessed the unique ability to create Pure Titans by screaming after administrating his spinal fluid into Subjects of Ymir; he had some control of these Titans and could even make them move at night.