Honestly I think that's how writing works. You see something, you steal it, and if you're a good writer or a writer who's really going to go anywhere, you make it your own. There is nothing new under the sun, and even saying that is a stereotype.

Hell, I can trace most of my characters back to an original stolen idea, or at the very least the stolen typeset for what character was popular at the time (for instance, I made Janus during the rise of the Angsty Mercenaries With Nondescript Dark Pasts That Have Left them Angry, Bad-Ass, and Wandering).

It's all about how you handle it.

(Or at least that's what I like to tell myself so I feel like less of a hack!)