During October 2010, Miss Martian and the Team faced great challenges as they fought the Injustice League and Red Volcano, got to the root of Red Tornado's "betrayal" and made a new friend in Zatanna. A training simulation gone wrong left the Team devastated, causing M'gann to suffer a crisis of confidence in her abilities.
Miss Martian arrived at the Cave's central area with Superboy when Aqualad and Robin were sparring. Robin and Aqualad had already figured out their teammates were in a relationship, though decided not to tell Wally or Artemis. Batman arrived to inform them about a series of attacks on major cities across the globe. The Team noted that the plants connected various unrelated supervillains and schemes that they've dealt with in the previous months. At this point the Injustice League announced themselves by hijacking worldwide communication networks. They took credit for the attacks, and demanded a billion dollar ransom to cease the attacks. Batman assigned the Team to deal with the Injustice League while the Justice League dealt with the plants.
En route to the Injustice League's base of operations, Count Vertigo was able to bring the Bio-Ship down, and the Team was forced to evacuate it. While the rest of the Team fought the Injustice League, Miss Martian and Robin went to plant explosives on their transmitter, a plant in a bio-dome. After it exploded, they joined the battle, but it took the Justice League to force the villains to surrender.
After being introduced to Zatanna, the Team decided to search for Red Tornado themselves due to being fed up with being left out of the search, taking Zatanna along with them. While in flight, the Team turned to Kid Flash for an initial idea.
Kid Flash's idea led them to visit Ivo in Belle Reve, as he would likely have knowledge on the whereabouts of T.O. Morrow. After Miss Martian tried and failed to read his mind, Zatanna used her magic to force him to blurt out the address: Yellowstone.
In Teton County, the Team was confronted by Red Tornado. After a short bout, Red Volcano appeared, evidently aware that the battle was a facade, and that the Team purposely lost. Red Tornado left, leaving the Team to face Red Volcano. The Team, however, was completely trounced by Red Volcano, who had the memories of Red Tornado combined with a superior processing speed. Red Torpedo, Red Inferno, and Red Tornado soon appeared and sacrificed their "lives" to defeat Red Volcano by sinking him in a sea of lava, though Red Tornado was saved at the last second. After dealing with the erupted super volcano, the Team headed to Morrow's lab and fixed Red Tornado.
The Team took part in a psychic training exercise meant to simulate an alien attack on Earth, which was designed to grow worse the more the Team succeeded in defeating the invasion. During the simulation, Miss Martian's telepathic powers caused things to spiral out of control after Artemis "died", which led everyone into believing everything was real. The collective emotions that were roused by the death also prevented the simulation from ending. Throughout the simulation, one-by-one, a member of the Team "died". After all the members on the Team "died" leaving Miss Martian alone with Martian Manhunter, Martian Manhunter finally had the ability to stop the simulation by "killing" Miss Martian.
During her therapy session with Black Canary, Megan was crestfallen after what occurred during the simulation. So much so, that she unintentionally morphed from her green skin into her Caucasian "Megan Morse" persona. Surprised, Black Canary commented that she turned "white", which oddly enough caused Miss Martian to become alarmed, before realizing Canary had meant Caucasian. She was then reassured by Black Canary that she should continue practicing with Martian Manhunter to ensure that it would never happen again.
Megan, Conner, and Wally dressed up for a Halloween party at the Happy Harbor High School.
Happy Harbor October 31, 20:15EDT
At the dance, Conner noticed that Marvin was playing a prank on the others by creating the impression of a Martian invasion. With the help of Wally and Megan, they made it look like the town was being invaded by Martians to get Marvin to confess to the prank.