Mantis

The Astronomer is one of the Elders of the Universe. He dedicated himself to observe the slow evolution of the cosmos.

The Collector is an Elder of the Universe. He is obsessed with the collection and preservation of living beings and artifacts from across the universe.

Experimental rays forged a psychic connection between the two twin brothers Joshua (a hoodlum) and Damian (a policeman). Joshua could control his brother from the prison cell.their physical abilities,

The In-Betweener is a servant of the forces of Order and Chaos. He makes sure there is always a balance between the two worlds and draws his powers from both as well.

Once enemies, after their last battle Silver Surfer and Midnight Sun left each other on amicable terms.

Several people have been Scorpio. Scorpio usually wields the Zodiac Key, which grants a multitude of powers.

Thanos was born on a moon orbiting Saturn called Titan. Thanos was born a Eternals' but has a gene in his genetic code that give him the appearance of a Deviant. The Deviants is a cousin race to the eternals. Growing up Thanos is mindful of his appearance and becomes distant. Although his fellow Eternals treated him no different, his bitterness of being different drove him insane. Thanos became fascinated with nihilism and embarked on a quest to "please" death. Thanos became an expert in the use of bionics and mysticism and augments his abilities making him the most powerful of the Eternals. He later conducted a nuclear bombardment of Titan that kills millions of his race. His mother was thought to have died in the attack, but she survived and was later kidnapped and dissected by Thanos. Thanos later traveled to Earth and built a base with a universal translator so he could communicate with his alien mercenaries. Earths heroes found the base and destroyed it. The Avengers along with Captain Marvel battle his minions and destroy them. Thanos ends up retrieving the cosmic cube and murders a large percentage of the Universe. He ended up discarding the cosmic cube when he thought it was drained of all power. Captain Marvel actually destroyed the cube which undone everything that Thanos had achieved. Thanos was eventually defeated by Earths heroes and returned to deep space. Thanos remains a power cosmic being, and a threat to our galaxy. His never ending passion to death will exist as long as he has power.

Tuc is from the future, he comes to protect his baby sister Luna from the events of the storyline the crossing. His mother is the inhuman known as Crystal but his father's identity in unknown.

Mantis fell in love with the Vision. Since he did not return his feelings to her, she carried a grudge against him and the Scarlet Witch.