"Magic wasn't real, as far I remember. Well, it seems that I was wrong."
Zero is a boy character first appearing in Chaos Ignites: Beginning Arc, Chapter 4. In Chapter 5, he reveals himself as Zero to Jayna and Aiko.
|Allies||Jayna, Aiko, Tsubasa|
|Appears in||Chaos Ignites: Beginning Arc|
Chaos Ignites: Beginning Arc Edit
He first appears in Chapter 4. In Chapter 5, he sees Jayna and Aiko fighting against a witch. They knew he saw everything and began to follow him silently. After a while, they lose him. They went to Kyubey and tell him everything.
After a while, they found him sitting on a bench in the park. He reveals himself as Zero and tells him that he knows about Puella Magi, because a friend of him was one, until she died.
He became a friend to Jayna, Aiko and Tsubasa. He sees that Aiko and Tsubasa learned about the true nature of magical girls: That they will despair and turn into witches. Jayna despaired. Zero knows that already, because the friend he mentioned earlier, also despaired. After a question of Kyubey, why he knows that, he answers "Selena". Kyubey knew that he was the friend of Selena, which she mentioned often.
Aiko also almost despaired and Tsubasa became a magical boy to save Aiko. Zero was okay with that and became very close friends with them.
Chaos Ignites: Revelations Arc Edit
Aiko becomes a veteran in Witch hunting and Tsubasa also got better. The "arc" is more about Zero's past however.
Zero found out about Magical Girls a few months before Aiko. He was pretty good friends with Selena, a veteran magical girl which almost became Zero's girlfriend...until Selena began to despair and turned into a witch. Zero gave Selena a promise - no matter what happens, he should still look forward and enjoy the future. A few months later, he meets Aiko and Jayna.
Back to the present, Tsubasa becomes a bit cocky about witch hunting, almost using his energy completely every time he fights a witch. Aiko knew that also overusing power can lead to becoming a witch, so she stopped Tsubasa often from doing so.
A bit later, Zero learns that his mother was a ex-magical girl, which survived somehow. Now he was a bit more careful, because that meant that he also has "good potenial" and that Kyubey might ask him to become a magical boy.
As Tsubasa despaired, he decides to contract Kyubey to help Aiko.
But little do he know, that he has much power than that...
Aiko - Zero was mysterious to her but they became good friends.
Jayna - Same thing with Aiko.
Tsubasa - The both became good friends more quickly than Aiko and Jayna.
Selena - The already-despaired best friend of Zero. Zero gave her a promise.