So this is what Ruby found? Guess the creature in the darkness wasn't so scary after all!

This is Angelfish, a robot built a long, long time before Ruby and her friends, left deactivated in storage for many years (only awakening after a security alert some time ago triggered her re-activation). Once a robotic diva, she now 'haunts' the long-abandoned remains of the casino she was built for. She very rarely gets visitors, and when she does, they end up fleeing before she can speak to them.
(The door behind her may seem too small, but Angelfish is in fact unusually tall, just above 3 metres in height.)