Supernatural
ThroughoutSupernaturalsfourteen seasons, the characters have been through quite a lot.
Angels are impressive, but humans are impressive in their own way, too.
One of those is to lure them into a ring of burning holy oil.
If an angel leaves the circle or touches the flames, both the angel and the vessel could perish.
Angels cant leave until the fire burns out.
While Cas can be harmed by this, Dean cannot.
Its just one thing he can do that Castiel cannot.
Angels dont need to get any rest, while humans have to.
Castiel famously says Ill just wait here then and stands in the same spot until morning.
Go Undetected By Angels
Angels are constantly in contact with each other.
Castiel frequently mentions angel radio, which even worked when the angels fell from heaven.
Theyre always able to communicate with each other.
Humans can also use Enochian sigils and other means to hide themselves from even the most powerful angels.
Cas doesnt have the same luxury Dean does as a human.
Cry
Humans are much more emotional than angels.
Thats part of what separates him as a character.
Many times, he has acted impulsively solely based on emotion.
He always has it playing in the Impala.
He has a huge classic rock music library.
Cas, on the other hand, doesnt really have an appreciation for music.
Angels arent keen on popular culture, so loving music is an aspect Dean has that Castiel doesnt.
Its something distinctly different about the two that makes them the characters they are.
Because of that, Dean was the only personal capable of wielding the First Blade.
The Mark and the Blades power goes hand in hand.
When he first appeared to Dean, he didnt understand sarcasm at all and took everything literally.
He even tried to use air quotes, but he always used them incorrectly.
Dean, on the other hand, is very well-versed in sarcasm.
Hes constantly cracking jokes and making fun of people.
This always makes for hilarious interactions with Castiel.
Its something Dean has mastered and Cas still needs to work on.
Sing
Deans love for classic rock goes hand in hand with his love for singing.
As a demon, he enjoyed getting up on stage and confidently performing karaoke.
He even hums Metallica to calm himself down.
While Dean definitely likes to sing, Cas has never really been shown doing so.
Angels arent known to enjoy music as much as humans.
When Metatron turns human, he explains how much better it sounds to humans than celestial beings.
That may explain why Dean likes music and singing and Cas could take it or leave it.
Demon Dean was immensely popular to the point that fans wished he had stuck around for longer.
They are the polar opposite and enemy of angels, so Castiel can never become a demon.
Change His Wardrobe
Castiel is known for his iconic trench coat.
Even people who have never seen an episode ofSupernaturalare familiar with the angels look.
Fans actually get upset when he doesnt have it.
While the Winchesters are known for wearing jeans and flannel, they have multiple wardrobe options.
Dean doesnt dress in the same exact outfit everyday, just similar looking ones.
While Cas doesnt have to switch outfits everyday, Dean does.
This could be because angels dont have to shower or worry about general hygiene whereas humans do.
Whatever the reason, Dean changes outfits every day, while Cas always wears the same exact thing.
