Check some of the featured SHSO characters, including Thor, Captain America, Spider-Man and others, and get ready to Hero Up for Marvel's first MMO in 2011!

Thor wields his mighty hammer in his suit of armor from "Marvel's The Avengers" as one of the newest playable characters in "Super Hero Squad Online"!

Hulk from "Marvel's The Avengers" smashes the baddies away as one of the newest playable characters in "Super Hero Squad Online"!

Luke Cage is ready to power his way through town as one of the newest playable characters in "Super Hero Squad Online"!

Ghost Rider is ready to set the streets of Super Hero City on fire as one of the newest playable characters in "Super Hero Squad Online"!

Punisher is ready to bring justice to the streets of Super Hero City as one of the newest playable characters in "Super Hero Squad Online"! Plus, just what is the Bunnisher? You'll have to watch to find out!

Daredevil dives into action to pummel some baddies in his classic costume as one of the newest playable characters in "Super Hero Squad Online"!

Angel soars from the greatest heights to take on baddies as one of the newest playable characters in "Super Hero Squad Online"!

Phoenix rises from the ashes to battle some baddies as one of the newest playable characters in "Super Hero Squad Online"!

The X-Men's Beast bounces into action as one of the newest playable characters in "Super Hero Squad Online"!

Iceman skates into "Super Hero Squad Online" as one of the game's newest playable characters!

The X-Men's very own Kitty Pryde phases into action as the newest playable character in "Super Hero Squad Online"!

Psylocke bursts into "Super Hero Squad Online" as the newest playable character in this character vignette from the game!

The Dark Surfer hangs ten in an action-packed vignette for "Super Hero Squad Online"!

The Iron Patriot joins "Super Hero Squad Online" in an action packed vignette!

Emma Frost enters "Super Hero Squad Online" in this new character vignette from the game!

Storm blows over the baddies in this new character vignette from "Super Hero Squad Online"!

Another day in the life of Spider-Woman--beating up baddies and scaling skyscrapers in "Super Hero Squad Online!"

Reptil brings his shape-changing skills to "Super Hero Squad Online" in this new character vignette!

Valkyrie shows what she's made of in this new character vignette from "Super Hero Squad Online"!

Journey to Asgard in the new "Super Hero Squad Online" expansion pack, now live! Play as your favorite Thor characters and journey through the Nine Realms now at www.HeroUp.com!