Beta

Beta (베타) is one of Sophia Amae's "children", and Horyang's and Cassano's "brother," a living Ignition Weapon created by the Workshop. It is implied that unlike his "brothers" he carries an entire Ignition Weapon within him.

Appearance and Personality
Beta a short boy with pale skin. His eyes and hair are never seen, as he tends to cover them with dark glasses, hats and bandages. In some instances, bright blue veins can be seen under his eyes. He wore a blue hoodie while he was in the care of the Workshop, but appears to prefer dark clothes after his escape.

After escaping his captors, he wears a red cap with a crude face drawn on it.

According to Sophia, he has a lonely and suspicious personality and has always lived in the laboratory. His statement on his  "brothers" as being "halfies" may hint that he has a complete "demon" inside of him. His attitude appears to be quite spiteful and vindictive, and it is likely that he is insane.

Powers and Abilities
Being a "complete" Living Ignition Weapon means that Beta is likely as powerful as Horyang and Cassano combined. His weapon manifests as a large yellow appendage that emerges from his shoulder, which is capable of easily knocking opponents aside.

Archimedes
Beta finds Hatsu sneaking around the Acorn Workshop and decides to fight him, but is interrupted by Cassano and Horyang. After being introduced to his "brothers" by Sophia, he states that he has no interest in "halfies" (likely referring to incomplete living Ignition Weapons) and wanders off.

Battle X Gamble
Beta escapes from his quaters during the second round of the Workshop Battle, and watches the fights from afar. During Viole's fight, Beta seems impressed by his performance, and breaks in to Viole's room. Upon being confronted by Viole, he tells him that they were the same, and gives Viole clues that lead him to discover the prize of the Workshop Battle.

The Truth
After using Emile to throw off the Workshop's guards, Beta was found by Viole. The two discussed the weapon inside the latter, which Beta reveals is a fake. He also recommended that Viole steal the real weapon.

When he was once again alone on the roof, Beta menacingly stated that he was waiting to break everything special to "him", likely refering to Viole. He was then found by the Workshop's guards, and fought them off before jumping into the sea, swearing to Sophia that he would show them all the "despair" that they had created.

Beta