03 (Zero-Three)

03 is the true mastermind behind the events of the first 3 sagas of CFA.

Personality
03 speaks once in the entire saga, and he claims that the Oservatarians are "lesser creatures", so it seems he has a lot of pride in himself. It can be inferred, that 03 is rather cruel, as he sends his Dark Matter to take control of Spectra, and controls her like a puppet.

Role in Cloud's Forum Adventures
03 is a very "behind the scenes" villain, as he pulls the strings as others do his dirty work. When the Dark Clones attack, it is tracked down to Luna, who is revealed to be the "true" mastermind. This turns out to be false, as Spectra is revealed as controlling Luna. This is, once again, false, as Dark Matter is inside of Spectra, controlling her. 03 finally appears in the flesh in Chapter 27 of the Lunar/Spectral Battle saga. It than tries to suck the powers out of the sages, specifically Luna. Than, Cloud grabs Spectra's staff, and flies up to 03, and blasts him in the eye, making his halo vulnerable. Cloud blows up the halo, revealing 03's true weak point, a cactus-like appendage at the bottom of 03. Cloud destroys 03, but manages to fly over and possess FCN. He takes control of the other sages (except Spectra), and the Soul Star, and they all end up killing Cloud. However, Cloud is revived, and Spectra gives him a Miracle Fruit, granting him Hypernova. He absorbs all the Dark Matter from everyone, essentially destroying 03 for good.

03 makes a cameo as a yarn creation in Chapter 19 of the Yarn Adventures Saga, though it is quickly destroyed.