Michael Sheen and David Tennant star in 'Good Omens'

Michael Sheen portrays an angel and David Tennant is a demon in their new series for Amazon called "Good Omens."

Michael Sheen and David Tennant are seen at the Amazon Originals World Premiere of "Good Omens" at Odeon Luxe Leicester Square in London. [Photo: IC]

Tennant thinks that good and evil aren't so different after all.

"They're each other's yin and yang really," said Tennant, "They've been on earth since the dawn of time. They both represent very different head offices, one heaven and one hell. They're both there to sort of cancel each other out. Crowley's there to tempt and corrupt and Aziraphale is there to bless and to heal. But, as the millenia go on they discover that actually they can help each other out."

All six episodes of "Good Omens," also starring Jon Hamm, debut on Amazon Prime May 31. It will also be broadcast weekly on BBC Two.

(Story includes material sourced from AP)