He's the supposed ghost that haunts Melbourne's Princess Theatre.
This what I found when I googled: This from someone who went on one of the 'Haunted Tours' -
http://www.castleofspirits.com/melbghost.html
We then trekked up to the Princess Theatre to visit with the famous ghost "Federici". Federici died of a massive heart attack on March 3rd, 1888 after a successful performance of the opera "Faust". A thirty-eight year old Italian-born Englishman with the original name of Frederick Baker, Frederici still resides at the Princess Theatre. On the night that Faust resumed after the death of Frederici the cast swore that his ghost was there with them, they claim that two Mephistopheles (Federici's part) stepped forward to take their bows that night. Ernest St. Clair who had taken on the role swears that every time he stepped forward to take his bow some invisible hands would push him backwards.
Another respected man reported of a strange man sitting in the dress circle during a late night rehearsal and took one of his staff to task for allowing a visitor into the theatre. The employee swore that he had certainly admitted no one. A search was made of the theatre but no stranger was ever found.
Many claimed that the ghost had brushed by them in the corridors and any mishap or equipment failure was then blamed upon Federici's ghost. The Theatre owners spotted a way to get a bit of good publicity for the theatre and offered up 100 pounds to any member of the public prepared to spend a night alone in the theatre, there is no record of anyone ever taking up their challenge.
In the very early 1900's a new fire alarm system was placed into the theatre. The resident fireman would have to punch a time clock every hour, which then triggered a light on a switchboard at a nearby fire station. If he failed to clock in the alarm was raised and a brigade dispatched to the theatre. One particular night during a heat wave no message came through on the hour and within minutes the brigade was dispatched. Upon reaching the theatre the firemen could find no sign of a fire but did find their colleague - huddled in a corner terrified beyond belief. He later claimed that he had opened the sliding section of the roof to let the heat out and some air in. As the panels opened, bright moonlight came into the auditorium revealing a figure standing, statue-like, on center stage. He described this figure as a tall, well-built man with distinguished features, dressed in evening clothes with a long cloak and a top-hat.
The best known sighting of the ghost occurred in 1917. The Theatre's wardrobe mistress was working back late to finish costumes for an upcoming production. At approximately 2.30am a fireman knocked gently on her workroom door and stuck his head inside and asked her if she'd like to see a ghost. The skeptical woman's curiosity got the better of her and she went with him. The went up some side stairs to a landing beside the dress circle. The fireman pointed to Federici who was sitting in the middle of the second row of the dress circle. He was staring down at the empty stage as the fireman and the wardrobe mistress looked on, they eventually left the ghost and returned back to their work quite amazed at what they'd seen.
A couple of years later another fireman had an experience. He saw the ghost standing in the same spot on two separate occasions. The list goes on and on of people who have seen this ghost, even up to this day. It is now considered good luck if the ghost is seen on opening night. I've heard that the Princess Theatre leaves a particular seat vacant in the Dress Circle for him on an opening night. Imagine sitting in the seat next to his!
We finished the tour of Melbourne not long after visiting the Princess Theatre, but there are many more haunted sites around Melbourne.