The ALL-NEW Sonic/Mega Man Crossover sequel explodes onto the shelves with "Worlds Unite" Part Three: It’s a cascade of cross-dimensional chaos! On Sonic’s World, the Freedom Fighters are battling with the terrifying arsenal of M’egga Man! On Mega Man’s World, the Robot Masters can’t keep up with the super speedy Sonic Man! Who can possibly save our heroes? The answer is sure to surprise you! After the history-making "WORLDS COLLIDE" crossover event, Sonic the Hedgehog and Mega Man unite once more—and this time Sonic Boom and Mega Man X are joining the fray! Featuring cover art from the legendary Patrick "SPAZ" Spaziante, villain variant by T.Rex and part 3 of the epic 12-part connecting variant cover series by artist Ben Bates!
- Worlds Unite, Part Three - Clash of the Corrupted
Sonic Man battles against the Light Robot Masters, who fail miserably to defeat or even cause damage to him. Even Time Man's Time Slow weapon is ineffective, and the robots are easily thwarted. Roll reports this to Dr. Light, who reluctantly turns to address another group of robots that he's summoned due to the crisis. This unlikely team consists of several apparently reformed members of Wily's Robot Masters as well as Roll's friend Quake Woman, all of whom are happy to lend their assistance. They arrive on the battlefield just in time to prevent Sonic Man from activating one of the Unity Engines, which Sigma-1 sends to him via a Genesis Portal. Flash Man promises the Roboticized Master that "[he]'ll wish he'd never left home!"; the scene then changes to Mobotropolis, where the Knothole Freedom Fighters are fighting M'egga Man. Despite being outnumbered, M'egga Man employs a powerful arsenal of various Eggman-themed weapons to deal with his heroic foes.
Sally Acorn believes they cannot handle it even if Sonic was with them, and asks Omochao to tell Cream the Rabbit to "make the call". Miles away from the area, Vanilla the Rabbit receives a call from her daughter, asking for Gemerl's help, requiring the robot to abandon his current task. Back in the battle, M'egga Man uses Egg Bumper to hit Knuckles the Echidna and Rotor Walrus. Bunnie starts firing at him, but M'egga Man defends with Egg Bumper and retaliates with Egg Flame Cannon. After Bunnie gives the signal, Big the Cat jumps on M'egga Man and smashes him. Sally orders the team to regroup while the robot is pinned and asks Tails to analyze the device (Unity Engine) it brought, but he can't do anything with the energy shield protecting.
Back in Mega City, Sonic Man easily dodges the attacks from the Robot Masters, mocking them by asking why to waste ammo if they can't hit him. While distract by the majority of robots attacking, Air Man lifts Sonic Man with Air Shooter and tells Flash Man to get ready. As Sonic Man falls, Flash Man uses Time Stopper to stop the blue menace, bragging that his weapon is superior to Time Man's Time Slow. However, Sonic Man stands up and says that he is too slow, kicking the perplexed Flash Man away. Sonic Man then uses his Ring Launcher to trap all Robot Masters and finishes them with Homing Shot. With no one left to disturb him, Sonic Man prepares the Unity Engine, but is interrupted by a whistle followed by a shot on his back. Break Man appears to face Sonic Man, first teleporting out Dr. Light's robots.
In Mobotropolis, M'egga Man uses Egg Bubble Trap to trap Big inside a bubble and get him off from him, and follows with a Egg Drill Launcher that nearly hits Bunnie and Antoine. Sally orders Tails to help Big and everyone else to attack the robot, who activates Egg Decoy Barrier. Knuckles thinks the floating eggs are not dangerous and hits them, but the eggs change into a big M'egga Man head and they start exploding, knocking out all of M'egga Man's opponents. With the "inferior organics" down, M'egga Man contacts his master and says he will now activate the Unity Engine, but is suddenly attacked by several missiles. He notes that someone else wants to get shot, but the robot that appears, Gemerl, says that all he wants is live peacefully, but due to the chaos the intruder was causing, he will make him rest in peace.
Two battles take place in two different worlds. Sonic Man and Gemerl are too fast for Break Man and M'egga Man to hit, and Break Man and M'egga Man can't be easily hit due to their shields. Sonic Man pushes Break Man to the Unity Engine with his Spring Shield, causing him to touch its energy barrier, and M'egga Man grabs Gemerl and uses his Egg Laser on his face. With all opposition down, Sonic Man and M'egga Man proceed to activate the Unity Engines. Sigma is pleased that his plan is coming to fruition, and Drs. Eggman and Wily whisper that once Sonic Man and M'egga Man return to the base, their plans will come to fruition too. The two worlds start to merge, and the Roboticized Masters, seeing each other, start their secondary objective.
- Wrong of Kong or 'Cuz he ain't a-peel-ing!
Three Roboticized Masters are showcased: Sonic Man, M'egga Man, and the-mercifully-nonexistent Comedy Chimp Man.
- In Mega Man's world, after seeing Sonic Man defeat his Robot Masters, Dr. Light sends Quake Woman and eight recently reformed Wily Robot Masters (specifically Air Man, Bubble Man, Flash Man, Wood Man, Hard Man, Snake Man, Spark Man and Shadow Man) to deal with him.
- Back in the Prime Zone, Tails, Knuckles, Amy, Cream, Big, Sally, Rotor, Antoine and Bunnie face M'egga Man in Mobotropolis.
- After both groups are defeated, Gemerl and Break Man (soon to be Proto Man) attempt to defeat the two Roboticized Masters, but fail.
- Sonic Man and M'egga Man activate the Unity Engines, and the Prime Zone and Mega Man's world begin to merge.
- Sonic Man and M'egga Man see each other, and prepare to fire.
M'egga Man: Hold on--someone else wants to get shot in the face!
Gemerl: Buddy, what I want is to live peacefully. But you just had to come to my town and cause a fuss. So, instead, I'll make you rest in peace!
- This marks the first comic appearance of Gemerl (his existance, in the Post-Super Genesis Wave Timeline, was previously mentioned in StH#257).
- The title of the first variant cover shares its name with the fifth volume of the Sonic Saga graphic novel series.
- Archie Sonic the Hedgehog Issue 273 at Mega Man Knowledge Base
- Archie Sonic the Hedgehog Issue 273 at Sonic News Network