Quote1 That does it. That enough. No more Mr. Nice Dog. Now Cosmo will hurt everyone. Quote2
-- Cosmo src

Cosmo is a former test animal of the Soviet Space Program (СССР). He was launched into Earth's orbit as part of an experiment but he drifted off into space during the 1960's, arriving in Knowhere and at some point being mutated by cosmic rays, he eventually came to serve as the station's security chief.

Cosmo met a distraught Nova shortly after he witnessed Suspensor turn into a zombie. He tells Nova that he's on Knowhere, a city built inside the severed head of a giant Celestial. Beings from all over the universe come to Knowhere, waiting for the end of the universe. Right now, the city's population had to go into hiding right after the Luminals brought something in a big box. Worldmind then informs Rider that he had deciphered the writing on the wall, which is a countdown to a timer.[1]

Suspensor attacks them and he is forced to kill her in self defense only to have her allies Cynosure, Crater and Discharge blame him for her death. Unable to fight the three aliens, as he retreats he makes a discovery of a talking dog. Subsequently, Cosmo gained Nova’s trust and friendship, and the two set out to find the fiend responsible for all the recent deaths on Knowhere.[2]

Cosmo brought Nova up to speed on when the events started, and the Xandarian Worldmind added any data he had at his disposal. Cosmo was mainly concerned with the safety of the remaining citizens of Knowhere who were safely hidden away in a dimensional envelope he wore on his collar. It was not long before Cosmo and Nova were ambushed by more zombies including the surviving members of Suspensor's former team, the Luminals, and determined that the creature known as Abyss was behind the mayhem. Together, they fought off the attacks, sealed Abyss inside his prison.[2]

Cosmo then charted a course to the birthplace of the Phalanx, the planet Kvch, in hopes that he can find a way to cure himself of the Transmode Virus that is slowly killing him. Then alarms were triggered when a murderous Gamora and Drax, now under the control of the Phalanx, slaughtered many residents in search of Nova. Cosmo arrived too late to stop them before they could follow the same path as Nova through the Continuum Cortex.[3]

The true nature of the Fault began to reveal itself and the corrupted beings of the Cancerverse started their invasion. The Guardians of the Galaxy allied with Thanos to stop the evil Lord Mar-Vell. In the end, the team disbanded, losing Adam Warlock, Phyla-Vell, Drax and their leader Starlord. But before he died, Starlord left Cosmo with a task to collect the greatest heroes in the universe to form a band of Annihilators, the team Starlord believed was what the Guardians of the Galaxy should have been. Cosmo one by one convinced the Silver Surfer, Gladiator, Beta Ray Bill, Quasar and Ronan the Accuser to team up and protect the universe together, as was Starlord's final wish.[4]

He was last seen injured, after Captain Skaarn's takeover of Knowhere.[5] Skaarn had poisoned Cosmo and shot him with something that dampened Cosmo's psychic telepathy. Using the Nova Force, the young Nova tried to push the poison out of his body. In the process, he found the foreign body inside of the psychic dog that disrupted his powers, and thus, saving him.[6]


Telekinesis: Cosmo is an incredibly gifted telekinetic, and is capable of amazingly precise use of his telekinesis.[7]

Telepathy: He can read and manipulate the minds of others and even higher order animals. He has demonstrated the following specialized uses:

  • Telepathic Defense: He can manifest his telepathy in a number of defensive ways.
    • Telepathic Cloak: He can mask his presence and the use of his abilities from being detected by other psions and psychic entities. He can extend these defenses to others around him as well. Cloaking via telepathy is not perfect and powerful telepaths may notice and 'see' through this ability.
    • Psionic Shield: Ability to erect a psychic shield for protection of himself and of others minds.
  • Telepathic Illusions: He can create realistic and very detailed illusions and cause people to experience events which are not actually occurring.
    • Telepathic Camouflage: He can alter the apparent physical appearance of himself and other people by altering the perceptions of those around him. This can go so far as to make other people believe that the camouflaged people are not there e.g. invisible.
  • Telepathic Manipulation: He can manipulate other people's minds easily, achieving a variety of effects.
    • Mind Control: He can control the thoughts and actions others to a certain extent.
    • Mental Paralysis: He can induce temporary mental or physical paralysis. He was skilled enough to make a Cancerverse-version of the Hulk stroke out by reaching into its mind.[8]
    • Mental Amnesia: He can erase any awareness of particular memories or cause total amnesia.
    • Mental Sedating: Can telepathically "sedate" his victims so that, if already rendered unconscious, they remain so for as long as he continues to "sedate" them. Together with Mantis and Moondragon, they were able to calm an enraged Thanos.[9]
  • Psionic Blast: He can project psionic force bolts which have no physical effects but can affect a victim's mind so as to cause the victim pain or unconsciousness, force them to suffer from a stroke, or turn someone brain-dead.
  • Mental Detection: He can sense the presence of another superhuman within a small but as yet undefined radius of himself by perceiving the distinctive mental radiations emitted by such a being.[8]

Extended Longevity: Cosmo is decades older than the normal maximum life expectancy of a dog, and does not appear to age physically.[10]

Strength level

  • Canine physiology: Cosmo can run faster than most humans, perceives reality at a different rate, and is extremely loyal.[11] His mouth has a bite strong enough to carry a flamethrower.[12]


  • Certain poisons can dampen Cosmo's powers.[6]
  • Telepathic Allergy: When Adam became the Magus for an instant to attack a powerful telepath, it caused both Cosmo and Mantis to experience nosebleed.[13]


  • White Spacesuit: Insulated and has a dome visor, and sometimes includes small compartments.[14]
  • Tesseracted Storage Crystal Chip: Built in a lab on Knowhere,[1] Cosmo wears it on his collar. This finitely-powered hardware can store the entire population of Knowhere in an instant.[15]

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