Roderick Hill and Sean Dugan in “The Picture of Dorian Gray.”

I can’t help thinking that Oscar Wilde’s Dorian Gray would have little interest in the character of the same name embodied by Roderick Hill in Round House’s season opener, the world premiere of a new production of The Picture of Dorian Gray. Sure, this Gray’s a slashing murderer, a sexual deviant and a good-looking-enough-guy (in a CW teen series kind of way). But yet, he still manages to be kind of boring.

That’s one of the problems surrounding this production. Though director Blake Robinson has assembled a fine supporting cast, the play’s two leads don’t measure up. Some fault here is with the script. Playwright Roberto Aguirre-Sacasa’s Gray is all over the place: briefly angelic, suddenly caustic, occasional remorseful and cartoonishly devilish. But while Hill has some challenges to work with here, he also doesn’t bring much sexual magnetism, sympathy or even chilliness to the part, and even seemed to break character in laughter at moments. As his love interest, Julia Proctor falls flat whether in seductive or innocent mode.