Michael Bubl says he is a "badass" like Frank Sinatra.

The singer is often compared with legendary vocalist Frank, as they have a similar warm tone and Michael has covered many of his old tracks.

Michael welcomed the comparison and insisted that like Frank, he has a dark side.

"People think of me as some kind of goody-goody altar boy and I'm not that at all," he told the UK edition of Hello! magazine. "They go: He sings the standards so he must be a sweet guy,' but Sinatra sang the standards and he was a badass."

In the past, the 36-year-old has been known as a ladies man.

However, the star turned his back on the bachelor lifestyle and married Argentine actress-and-model Luisana Lopilato earlier this year.

Michael confessed that he used to pursue lots of women because he was insecure.

"Half the women I was with, I was probably with them just to prove to myself that I was manly and cool," he explained.

"Listen, I love women the way they look and smell and feel but often I was with then for the wrong reasons. Luisana knows all about my past, but I'd already started to work on those issues before I met her because I was on the road to becoming a rich, lonely old man."