With the arrival of heroes from a different world, this inspired Sally to have the heroes head to the different worlds and gather up other-worldly heroes to help stop Sigma's plan. The heroes were then surrounded by four mavericks– Burn Rooster, Dynamo, Vanishing Gungaroo, and Double–and were almost defeated until Sticks arrived via a Genesis Portal with heroes from the world of Street Fighter, Ryu, Ken Masters, Chun-Li, and Guile. Sigma then opened up countless Genesis Portals to different worlds to plant and activate Unity Engines so he may consume more worlds, gain their energy, and essentially become a god. The heroes then attempted to fight off against the mavericks, but due to their weakened conditions, were no match for the mavericks. Unfortunately, Sigma emerged in his Sigma-2 form, rising from the Lost Hex and bringing in mavericks from both the past and future to destroy the heroes at their weakened states. With the armor of the zeti destroyed in the process, the unconscious zeti were imprisoned and the heroes gathered up to catch a breath.
While under pressure at defeating their robotic friends, the organic heroes struggled to defeat their friends or the Deadly Six until Eggman and Wily built and used the Egg-Wily Uppity Robot Scrambler Cannon to subdue the robots and the Deadly Six. With the Deadly Six surrounded, the heroes were then surprised by the zeti's abilities to control robots, as Mega Man and his friends, the Maverick Hunters, and Gemerl were possessed by the Deadly Six, firing at the non-robotic heroes. During the battle, Sticks was punched by Zomom hard enough to fall into a Genesis Portal in the sky, transporting her to the World of Street Fighter. While defeating the mechaniloids was easy enough, the Deadly Six provided enough of a challenge for the heroes. Thus, the Unified Heroes on top of the Sky Patrol confronted the mechaniloids and the Deadly Six. The Unified Army confronting the mechaniloids and the Deadly Six, from Sonic Boom #9. Luckily, Sigma sent out the "cannon fodder": the mechaniloids and the Deadly Six to distract the heroes as he begins his next phase. Mega Man X let the scientists out and, after getting the information needed, the Unified Army made way to the Lost Hex where they would take on Sigma. While the three were imprisoned quickly, Eggman and Wily knew the location and plans of Sigma, and would tell the heroes if they were out of the brigs. During the meeting, a yellow Genesis Portal popped up, with Eggman, Wily, and Xander Payne (who escaped jail during the uniting worlds incident and rescued the two scientists from Sigma's grasp) walking in unexpectedly. While recuperating from the uniting worlds, the heroes rested up and Sonic, Mega Man, Sally Acorn, Rotor the Walrus, the Maverick Hunters, Flash Man, and Sticks held a group meeting on the whereabouts and motives of Sigma. Light, and Auto– and Team Sticks united gathered at the Sky Patrol to rest up and devise a plan. Once the two Roboticized Masters were de-roboticized, the Freedom Fighters, Gemerl, the Maverick Hunters, Mega Man and his allies–Break Man, Roll, Rush, Dr. The other heroes from the two worlds, along with the three Maverick Hunters and Team Sticks– Sticks the Badger, Comedy Chimp, and Fastidious Beaver–arriving via Genesis Portal, united together to help civilians caught in the crossfire. With this, the two worlds combined, and Sonic Man and M'egga Man fought each other due to their inner programming commanding the two to fight and purposely de-roboticized each other thanks to the subterfuge of Eggman and Wily. While the Light Robot Masters and the Wily Robot Masters, along with the help of Quake Woman and Break Man, attempted to stop Sonic Man, and the Freedom Fighters and Gemerl attempted to subdue M'egga Man, none of the heroes were successful at beating the two Roboticized Masters from activating the Unity Engines. Sonic and Mega Man were then roboticized into Sonic Man and M'egga Man, and sent to Mega City and Mobotropolis, respectively, to plant and activate the Unity Engines to combine both worlds for Sigma to consume. Wily to the Lost Hex, forced the two scientists to built armor for the Deadly Six so he could command the zeti, and used the zeti to capture Sonic and Mega Man. Sigma then found himself at the Lost Hex in Sonic's World and forced Dr. In the year 21XX in Mega Man's World, the Maverick Hunters, led by Mega Man X, attempted to stop Sigma at his plans, but thanks to the reploid's ability to manipulate Genesis Portals, Sigma escaped.
The original Unified Army, from Mega Man #50.