Anissa

History
Anissa was sent to Earth to inspect what preparations Markhas taken to secure the Earth for viltrumite control. When Mark revealed he had taken no steps towards the domination of Earth, Anissa decides to reason with him instead of using violence. She explains that the Viltrumite empire will bring peace to Earth and share their technology with one another. When reason fails, Anissa resorts to violence and strikes mark down leaving him in a crater. She warns him of another viltrumite agent will return for Mark in the later future and decide his fate, that agent turned out to be Conquest. After her visit to Earth Anissa ran into Allen the Alien, and attacked him. Allen having recently been powered up was having an easy time with her, but when he realized that she would take him to the same prison as Omni-man, he threw the fight. Letting Anissa win and take him to the prison.

Anissa has also been seen during the Viltrumite war, she has fought Mark, Allen the Alien, and Omni-Mannear the planet of Viltrum in a last effort to win the war against the Coalition of Planets. After the planet Viltrum was destroyed, Anissa along with the remaining Viltumites relocated to Earth and live amongst it's people in secrecy until the time is right to strike.

aRRIVAL ON EARTH
While Mark Grayson and Debbie Grayson were having lunch, Anissa interrupts to get Mark's attention. She threatens to kill Mark's mother so that he would come with her. She meets Mark in the sky, hoping to convince him to aid in the Viltrumite takeover. She started by apologizing to him. She begins her speech about how Viltrumites would turn Earth into a utopia for centuries and rid the planet of disease, war, and death. A worried Mark asks what happens afterwards with her revealing that planet's eventual destruction. Their conversation was interrupted by Cecil Stedman and Mark has to save a cruise ship being attacked by a monster. She offered her assistance, hoping to convince Mark to help towards her goal. She slain the monster with ease by flying into its head. After, she and Mark helped the passengers and moved the cruise ship onto an island. Mark, exhausted from the ordeal, sat down while she stood, commending him. She asked Mark one last time if he was willing to come to the Viltrumite side. Mark refused and Anissa lost her patience [2]. With a light warning fulled with attacks, she reminds Mark that he doesn't have a choice in this matter. She told Mark that he has no idea how much danger he's in. She, then, told him that another agent will come to check on his progress in either five months or five years. She leaves, hoping that Mark realizes the danger before then. General Kregg met her in the Viltrumite Warship as Anissa reported that she couldn't convince Mark. Anissa reassures Kregg that it was only a matter of time before he came to their side. Anissa would catch notices of Allen flying back to Talescria. They battled and she was shocked by his new found strength. She defeated Allen, not knowing that he had purposely thrown the fight and took him to prison.

aNISSA ASSAULTS MARK
After the Viltrumites begin to assimilate themselves into Earth culture, they start to repopulate their species as they number less than even 30 Viltrumites now. Unlike numerous males of her species, Anissa sees humans as a species she can simply not breed with and instead chooses Mark because of his strength and genes. Anissa first attempts the 'human' mating habits.

After those attempts fail, she takes Mark by force after he returns from being trapped in a different dimension (Invincible #110). She and Mark battle across the sky when he rejects her advances and strips him, forcing him to mate with her.