J.J. McKinley is a fictional character portrayed by Darren Mann in the TV series Supernatural.
In the first episode they appeared in, titled Brother's Keeper (season 10), they were 26 years old.
They appear in 1 episodes out of a total of 327 aired
Episodes1
Brother's Keeper
episode S10.E23 may 2015Dean comes to a stunning decision that will alter his life -- as well as Sam's; Rowena and Crowley face off, putting Castiel in the middle.