A very strange night

The Intruder

Batman arrives in the Batcave and activates his Detective Mode. Alfred is at the Batcomputer. Just him. No one else. He grapples up and asks Alfred:
"What did you find?"
"The Batcomputer has detected movement in the lower levels of the Cave. Where your servers are."
Batman dives into the black pit of the Cave and arrives in the lower levels, revealing so many servers and technology in the prototype stage.
"What am I looking for, Alfred?"
"The Batcomputer has rendered a bat looking creature."
Batman activates Detective Mode.
"I don't see anything here."
"Let me run a scan on the Cave."
Alfred scans the area:
"Sir... It is right next to you!"
Batman dodges whatever was next to him.
"I don't see him... Wait a second."
Batman deactivates the Detective Mode:
"His body reflects the X-Ray Rays!"