Misha Collins' Castiel became a central figure in Supernatural after his Season 4 introduction. Castiel remains one of the ...

For 12 out of the 15 seasons, Supernatural fans got to enjoy the third-wheel antics of Castiel — the Winchester’s (though more specifically Dean’s) literal guardian angel. Brought to life by Misha ...

Supernatural featured standout side characters, and fans hope to see some of them return in future revivals and spinoffs.