Characters on Mega Man's side
Nick Fury, Mega Man, Proto Man, Eddie, Rush, Darci Roll, Supergirl, Black Panther, Wolverine, Storm, Shadowcat, Rogue, Professor X, Ice Guy, Phoenix/Jean Grey, Beast, Cyclops, Angel, Nightcrawler, Mr. Fantastic, Invisible Woman, Harley Quinn, Deadpool, Cat Woman, The Thing, Human Torch, Spider-Man, Iron Man, War Machine, The Penguin, Cyborg, Captain America, Batman, Black Canary, Robin, Black Widow and Hawkeye
Neutral
Lex Luthor and Mercy Graves
Characters on Wily's side
Dr Wily, Bass, Treble, Callisto (until the end), Pyro (until the end), Magneto (until the end), Lady Deathstrike (until the end), Dr. Doom (until the end), Electro (until the end), Green Goblin (until the end), Dr. Octopus (until the end), Bane (untol the end), LexCorp's T7 (defeated), Burst Man (defeated), Cloud Man (defeated), Junk Man, Freeze Man, Slash Man, Spring Man (defeated), Shade Man, Turbo Man, Blizzard Man, Centaur Man, Flame Man (defeated), Knight Man, Plant Man (defeated), Tomahawk Man, Wind Man (defeated), Yamato Man, Guts Man (defeated), Titanium Man, Dyna Man (defeated), Quick Man, Mecha Dragon (defeated), Snake Man, Spark Man (defeated), Pharaoh Man, Charge Man, Skull Man and Gyro Man (defeated)
Robosaur mini-bosses; Nyasasaurus (defeated), Cynognathus (defeated), Mastodonsaurus (defeated), Asperoris (defeated), Stenaulorhynchus (defeated), Silesaurus (defeated), Ctenosauriscus (defeated), Rauisuchus (defeated), Erpetosuchus (defeated), Thecodontosaurus (defeated), Kannemeyeria, Stahleckeria, Shansiodon, Placerias, Giant Robo-Spider Crabs (defeated), Giant Robo Lobsters (defeated), Herrerasaurus, Diademodon, Nothosaurus (defeated), Placodus (defeated), Tanystropheus (defeated), Cymbospondylus (defeated), Prestosuchus, Leedsichthys (defeated), Metriorhynchus (defeated), Hybodus (defeated), Liopleurodon (defeated), Hesperornis (defeated), Squalicorax (defeated), Xiphactinus (defeated), Halisaurus (defeated), Bonnerichthys (defeated), Pteranodon (defeated), Elasmosaurus (defeated), Archelon (defeated), Tylosaurus (defeated), Platecarpus (defeated), Globidens (defeated), Mosasaurus (defeated), Cretoxyrhina (defeated), Cretolamna (defeated), Coelophysis, Plateosaurus, Cetiosaurus, Diplodocus, Dryosaurus, Othnielosaurus, Ornitholestes, Stegosaurus, Allosaurus, Brachiosaurus, Eustreptospondylus, Cryptoclidus (defeated), Ophthalmosaurus (defeated), Ichthyosaurus (defeated), Shonisaurus (defeated), Plesiosaurus (defeated), Tapejara (defeated), Ornithocheirus (defeated), Iguanodon, Polacanthus, Kronosaurus (defeated), Deinonychus, Megalosaurus, Koolasuchus (defeated), Deinosuchus (defeated), Leaellynasaura, Muttaburrasaurus, Edmontosaurus, Ankylosaurus, Dromaeosaurus, Quetzalcoatlus (defeated), Thescelosaurus, Triceratops, Parksosaurus, Torosaurus, Tyrannosaurus Rex, Apatosaurus, Therizinosaurus, Velociraptor, Tarbosaurus, Protoceratops, Mononykus, Saurolophus, Azhdarcho (defeated), Argentinosaurus, Giganotosaurus, Hypsilophodon, Sarcosuchus (defeated), Abelisaurus, Camarasaurus, Brontosaurus, Carnotaurus, Ceratosaurus, Oviraptor, Corythosaurus, Cryolophosaurus, Dilophosaurus, Dicraeosaurus, Ornithomimus, Struthiomimus, Gigantoraptor, Kentrosaurus, Lesothosaurus, Maiasaura, Monolophosaurus, Ouranosaurus, Pachycephalosaurus, Parasaurolophus, Pentaceratops, Psittacosaurus, Sauroposeidon, Spinosaurus, Stegoceras, Styracosaurus, Baryonyx, Tenontosaurus, Zuniceratops, Nyctosaurus (defeated), Sinovenator, Titanosaurus, Troodon and Albertosaurus
Mega Man 7: Return of Wily (19th July 2070) (A year and three months after Wily's defeat from the first event of Mega Man 7)
After defeating this T7-robot, Wily sends other types of robo mini-bosses and robot masters. Robo mini-bosses like Kannemeyeria, Stahleckeria, Shansiodon, Placerias, Diademodon and Herrerasaurus under the commands of Titanium Man, appears to scare people and attack the heroes, also with an army of Sniper Joes and Metbots. However, heroes like Iron Man, War Machine, Angel, Invisible Woman, Mr. Fantastic and Mega Man defeats the mini-bosses, plus this robot master as well. The army of Sniper Joes and Metbots quickly backs down, plus also giving up.
After defeating many of those robo mini-bosses, some of the heroes like Cat Woman, Mega Man, Spider Man and Nightcrawler, meets mini-bosses of Prestosuchus, Coelophysis, Plateosaurus, Cetiosaurus, Diplodocus, Dryosaurus, Othnielosaurus, Ornitholestes, Stegosaurus, Allosaurus, Brachiosaurus and Eustreptospondylus, under the commands of Snake Man. Then those heroes defeats those mini-bosses and this robot master, Snake Man.
Later on, the other mini-bosses comes in like Iguanodon, Polacanthus, Deinonychus, Megalosaurus, Leaellynasaura, Muttaburrasaurus, Edmontosaurus, Ankylosaurus, Dromaeosaurus, Thescelosaurus, Triceratops, Parksosaurus, Torosaurus, Tyrannosaurus Rex, Apatosaurus, Therizinosaurus, Velociraptor, Tarbosaurus, Protoceratops, Mononykus, Saurolophus, Argentinosaurus, Giganotosaurus and Hypsilophodon under the commands Pharaoh Man, Charge Man, Skull Man, Centaur Man, Yamato Man and Slash Man. Heroes like Proto Man, Iron Man, War Machine, Invisible Woman, The Thing, Ice Guy and Human Torch defeats those robots. Then the other ones appears...
To be continued...