Trevor was a quiet, but highly intelligent child. The only child of noted scientist and researcher Dr Edwin Reece Campbell, and Marjorie (nee Franklin) Campbell, Trevor grew up in suburban Hanover, near Lee and Columbus and did all the things young kids did. School (where he excelled), playing in the back yard with his dog Gunner (beagle), going to self defense classes at Master Lee's on Greeley, playing with the neighborhood kids and going to the park. What set Trevor apart from the other kids was his interest and facility with computers. Trevor was a prodigy when it came to the intricacies of building and upgrading computers, and by the tender age of nine, he had built a top-of-the-line gaming computer. Not content to build using off the shelf components, Trevor assembled all the components by hand. Right around the time he hit high school he started to withdraw from socializing, spending much of his time in the library or in his father's workshop, sometimes helping his father with research and building newer and better devices. This willingness to work with his father would be the cause of his transformation.
Trevor was working with his father on a particle motion generator (teleportation device), which operated under the premise that if particles can be made to move "in between" light; that an effective brand of "teleportation" can be achieved. In a freak accident, the generator exploded, and Trevor was doused with altered "shadow" particles. These particles fused with, and altered Trevor on a genetic level. Trevor remembers little of the accident, but when he recovered, he found his skin was altered to a flat black color. From there he discovered that he was susceptible to direct sunlight, but was able to teleport with ease from one shadow to the next. Trevor spent the next 10 years honing and building on his powers, discovering new and interesting methods of manipulating the darkness that now lurks within him. This was at the expense of his relationship with his mother, Marjorie. Terrified by his appearance, and frightened by his amazing powers, Marjorie slowly withdrew from her son, leaving him to be cared for by the doctors.
Trevore recovered in record time, and tried to go back home, but Marjorie was too afraid to accept him. He lived at home for two months, avoiding his mother by working on a plan late at night. Building a computer business, Nightwarez, and charging top dollar for his ingenuity, Trevor made for himself a respectable income. His next move was to slowly excavate a small base of operations, 500 feet under Freedom City's Liberty Park. (Directly under the bandshell to be precise.) Thus was the Twilight Hall made, with none the wiser.
Finally, Trevor established a number of PO Boxes for himself and some blind doors for an address. One in particular is a favorite of his. There is a warehouse in West End, with a door that opens to three blank walls. From inside that closet sized room, Trevor can teleport to and from Twilight Hall, and accept deliveries from Peapod, and the local pizza place (Best deep dish in Freedom City!) without raising too many questions.
Trevor now monitors the city, using his super computer in the Twilight Hall and tapping into the many surveillance cameras throughout the city to pinpoint trouble spots. Trevor has two black cats (Cleo and Ramses) to keep him company, a wide array of online contacts to call upon and his formidable powers to combat crime!