Jared Padalecki also reflected on his 15-year journey ahead of the final episode.
The CW hit premiered in 2005 and lasted 15 seasons.
The stars of the outgoing CW drama have resumed filming on the last two episodes.
The actor revealed the news in an Instagram video on Monday.
Padalecki was arrested on Oct. 27.
ET's Katie Krause sat down with Hilarie, where she opened up about her wedding, her kids and working with her 'One Tree Hill' cast agai
Misha Collins and Alex Calvert also join in on the farewell message celebrating the show's final premiere night.
See images of the gang all getting ink at the wedding reception!
'Supernatural' may be ending, but we're taking fans back to the beginning!
ET is bringing you an exclusive flashback from our first interview with 'Supernatural' stars Jared Padalecki and Jensen Ackles in 2005.
ET sat down with longtime friends and co-stars, Padalecki and Ackles, while promoting the show's final season.
Ackles, Jared Padalecki, Misha Collins and the 'Supernatural' team preview the 'epic' final season, which will culminate with an 'organ
It was an tear-filled morning on Sunday as fans said goodbye to the series.
The co-stars also discuss bidding farewell to the Winchester brothers.
