As a fellow sleepwalker I think he is genuine. I sleepwalk and talk. It used to scare my kids but they soon twigged that if they asked me for anything I'd say yes, or give them the password for the computer! I had to make a house rule, not to ask me for anything while I was sleepwalking/talking.
My most embarrassing sleepwalking realisation was when my then future hubby came into our room at his mother's and said "Good morning Blackpool Illuminations". I had slept walked into everyone's bedroom in just my knickers, flicked on the bedroom light, stood there for a few seconds & went onto the next room. Apparently I did this through the house with my future mother in law following me, turning the lights back off! Breakfast was awkward!
Stress can trigger it, and some but not all grow out of it. I started aged 3 and still sleepwalk and talk at 39.
So yes, I voted real.