Characters who wear a Trench Coat

Deadpool wears one sometimes as well.

"This isn't a trenchcoat..it's a gay substitute.It's like a bradressjacketcoat."

Speedball did too during the height of trenchcoat fashion in the 90's

Morpheus and Trinity

Shiver Man

Fantomex.

White Tiger (Kasper Cole)



Dante

Phantom Stranger
Everyone who was in the Hush storyline (even the reporter at the beginning of pt2)
All the Green Lanterns who appeared for the funeral in the JL episode 'Hereafter'
Timber Wolf
Anton Arcane
Cobra Commander
Major Bludd
Nathaniel Dusk
Baroness
Mongrel
Jonah Hex
Deathstroke
Roy Harper
Crimson Avenger 1 and 2
Deadshot
Cicada (Flash Villain)
Hitman
Cinnamon
Shock Trauma (of the Hangmen
Doctor Occult
Eclipso
Sand (Hawkins)

Dante, Virgil, and Nero from Devil May Cry...and Gilver, who is secretly Virgil from the novel.
The entire cast of the Matrix
White Spy and Black Spy from the Spy vs Spy comics. Red Spy and Blue Spy from the Spy vs Spy video game.
Commissioner Gorden [sometimes] from Batman
The Returner [from the movie of the same name]
All four Crows from the Crow movies, plus the TV series, the comics, and even half of the villains.
McGruff the Dog [Take a bite out of crime]
Cannonball from Xmen wore one for a while
Doctor Who and the Master [And Donna Noble for a while]
The Steampunk version of Batman...if that counts.

...Lets just say trench coats are a very popular alternative for cape

Gambit

Onomatopoeia

lookit all the coats...

The 4th & 10th Doctors
 

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Me!

Heroes with trench coat.

the savage dragon