When pitching your business to potential investors, numbers are hugely important. But personality matters, too.

For Shark Tank investor Robert Herjavec, the biggest turnoff in any entrepreneur is arrogance -- or any sort of aggressive behavior for that matter.

“That’s why I didn’t like Mark [Cuban] at the beginning,” he recently told Entrepreneur. “Not that Mark is arrogant, but he’s pushy and I’m not. And I think we struggled at the beginning.”

Herjavec spoke with Entrepreneur while promoting the Small Business Revolution, a year-long campaign by business services provider Deluxe that honors America’s business owners.

So, what does the sparkly-eyed “nice Shark” look for in an entrepreneur? Find out in the video above.

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