Alpha

About
A rather imposing woman who guard the entrance to Nishien Electromagnetic HS. Kozuki Sayoko mentions it should be obvious she is an android due to her text being in katakana.

Despite her being found out by a 4th wall break, it doesn't seem all that obvious to them that she is one until she gets damaged. She prioritizes her master, Hiraga Hinako over all else. She is even willing to give herself up to help her improve in life.

Her normal activites in helping Hinako are less about fighting and more akin to being a mother.

During the game she tries to stop Amatsugami Hidehiko's group from entering the school. Ishikiri Bakuha attempts to be a cool hero and she one-shots him. During this the rest snuck in and she tries to give chase, but is told to do something else. She drags Bakuha away, most likely to get modified.

She appears again when Sayoko is being kidnapped by the modified bakuha, she fights with Kobayashi Yoshihito who punches her arm clean off. Finally revealing that she is an actual android. She retreats with Sayoko and is later found guarding the way to Hinako's room.

She is beaten by the use of a large electromagnet and the large power supply of the nearby talking Fast Breeder Reactor Terunobu. As she is caught by the magnet, she slowly gets destroyed until her drives are erased. She tells Hinako to join up with Tentei to move on with her life. As her HDD is erased, all she can ask for is a boot floppy or to try again.

Hidehiko promised Hinako that she'll get her own laboratory and she can get to work on fixing Alpha as he seems to feel bad. Hinako will succeed if interacted with. As her feelings for Hidehiko progress, so does Alpha's which leaves her a bit worried. She wonders if she should erase those feelings, but is convinced that they are hers too. She also becomes able to express herself in hiragana thanks to the increase in funding, which seems to be the only massive improvement alongside waterproofing.

In her ending she is still around to assist the grown up Hinako.

Abilities
She is shown to be a strong fighter capable of going toe-to-toe with Kobayashi Yoshihito, though this might be more because of her unusual circumstances.

When she's back in action, she functions as the special attack for Hinako. Hinako calls for her and she appears a bit later to pummel the enemy.