Name: Ael, the train attendant (Que-000 Synthezoid droids)

Age: Unknown

Personality: calm, polite, helpful and sometimes expresses feelings.

Looks: Pale skin body, Lime Green hair, emerald green pupilless eyes, has red diamond on his cheek and robotic ears (resemble of Chobits) 

Clothes: wears a white high-collar coat, wears blue-gray leggings and white boots.

Functions: Program as a Buddy system, has self-defense mechanism when a passenger is in danger, deploys harmless weapon or power. (Just to let you know: they're hundreds of him in every train carts but it is hidden somewhere)

But there are two choices for communication:

Automatically - speak in robotic way

Manually - speak in normal way

Core Sphere - It is where Que-Droids store away but it can only be activated when it scanned the passengers number. The moment it scan, the sphere change shape which it can morph into a humanoid form. Once the number reaches to zero, he is no longer needed as he watched his passenger left before he was reverted to a sphere for rejuvenation.