He's a Silent Guardian, a Watchful Protector

San Diego is not so grim as Gotham City, but Ted Rotunda still stands guard over its citizens while attending Comic-Con. You know, just in case.

This is Catwoman, Hear Her Roar

One of the coolest features of Arkham Knight is the new Dual Play feature, which allows Batman's allies, such as Catwoman, to help out with fights on the fly. Above, Jessica Del Pino poses as Catwoman next to an original Batmobile during Comic-Con in San Diego.

What Do You Think, Bat-Brain?

Cosplayer Cara poses as the mischievous Harley Quinn during the London Super Comic Con at Excel. Harley Quinn is among the cast of villains returning for Arkham Knight.

Is Your Mind Playing Tricks on You ... Or Am I?

Scarecrow returns as the main antagonist of Arkham Knight. He's on a mission to unite the super-villains of Gotham under a common cause: destroying Batman. In spite of his evil intentions, Scarecrow's popularity spans the world. Above, a fan poses as Scarecrow at the MCM Ireland Comic Convention.

He's the Hero Chiba Deserves

In Chiba, just east of Tokyo, a 41-year-old man has gained notoriety by dressing as Batman and patrolling the streets on his "ChiBatpod." Above, a local woman watches in bemusement as the hometown hero zooms by.

Holy Call-Waiting, Batman!

Beau Elfman, of La Mesa, California, answers an urgent call while dressed as Robin at Comic-Con in San Diego. Robin will definitely appear in Arkham Knight, and you can catch his character reveal in the "All Who Follow You" trailer.

The Darth Knight Rises

A fan in Bangalore shows off a fun Batman/Star Wars mashup for India's Comic Con. Unfortunately, Lord Vader has not been confirmed for Arkham Knight.

Whatchyou Think it Was ... Poison?

We know from trailers that the mysterious Poison Ivy will return in the new Arkham Knight, but it's still unclear how big a role she'll play as a villain. Above, a fan poses as Poison Ivy at Comic-Con in San Diego.

Now the Real Game Begins!

The bonus Riddler Trophy challenges are some of the coolest sections in the Arkham games, and they're making a welcome return in Arkham Knight. Above, Michael Gilbert dons his best Riddler outfit for New York Comic Con.

You Can't Outsmart Mother Nature

Autumn Breeze blows a kiss to her admirers while dressed as Poison Ivy for the San Diego Comic-Con.

Nine Lives, Remember?

A cosplayer shows off her classic take on Catwoman at the annual C2E2 Comic & Entertainment Expo in Chicago.

Keep Your Enemies Closer

Fierce rivals make amends as Magdalena Makulec, Kirk Reay, and Juliette Stone pose for an unlikely team-up at the London Super Comic Con.

X Marks the Spot

Brazilian cosplayer Pomp Berry shows off her Poison Ivy costume at the MCM Ireland comic convention in Dublin.

Agent Provocateur

A French cosplayer steps into the ring as Catwoman at a convention in Lyon, France.

Villains Unite

Siblings Lecigne Ines and Jobian Ines pose as their favorite Batman villains, Poison Ivy and Harley Quinn, in the Gaslamp District on the first day of San Diego Comic-Con.

The Keystone To Law and Order

A cute pair of classic cosplayers poses in front of authentic Gotham police vehicles for Comic-Con 2014 in San Diego.

Even Super Criminals Need a Break

Gen Nylen, dressed as Catwoman, and Maddie Des Jardins, dressed as Harley Quinn, take a breather on the sidelines while attending San Diego Comic-Con.

Robin Lets Loose

Batman fans and a very wild Robin celebrate a cricket match between West Indies and England at the Trent Bridge cricket ground in Nottingham.

Another Deadly Duo

Poison Ivy and Harley Quinn have a longstanding friendship, celebrated here by two cosplayers at the 2014 Wizard World Comic Con in Portland, Oregon.

To The Batmobile

Batman poses next to the original Tim Burton Batmobile at the Maison d'Ailleurs, a museum of science fiction in Switzerland.

Call Me Harley! Everyone Does!

Cosplayer Kaili Williams of West Palm Beach, Fla., poses as Harley Quinn for a stylized photo shoot.