'Supernatural' Exclusive: Misha's Major Mistake

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No one expected Castiel to become such an integral part of Supernatural -- not even actor Misha Collins who saw this six-episode gig as just another role.

Five seasons -- and one series regular upgrade -- later, and it's hard to imagine the hit CW series without Castiel. Although if Collins knew he'd be playing this role for so long, he might have made one crucial change to his performance.


VIDEO - Misha Collins Talks Supernatural Season Nine!

"I thought I should give him a really commanding, powerful voice -- something I now regret because I've been doing it for six years and there are definitely times when I have to go home and drink hot lemon water and have a sore throat," Collins laughs in ETonline's exclusive clip off Supernatural: The Complete Eighth Season DVD.

Check out co-star Jenson Ackles weighing in on Misha's choice in our exclusive video and pick up your copy of Supernatural: The Complete Eighth Season on September 10.