UNKNOWN SOLDIER

Unknown Soldier, also known as Player 1 from the shooter game, Forgotten Worlds, is a helper character who appears on Marvel vs. Capcom. Unknown Soldier also makes his playable crossover debut with Player 2 and Sylphie the Shopkeeper in Namco x Capcom, being able to dress up as characters to use other attacks due to distortions. According to the storyline, he was created alongside Player 2 to defeat Emperor Bio, who has turned the Earth into a desolate wasteland called the 'Dust World.'

Certain characters from his game, Gods of Thunder and Wind and the King of Gods make a cameo in one of the background stages.

Unknown Soldier's a regular Assist Projectile Type Character. He fires a few beams from his gun, with fair speed and power, which gives a good chance for the player to connect other attacks or even Hyper Combos.

THANOS

Thanos is a character in the Marvel Vs. Capcom series. He appears in Marvel Super Heroes as the game's final boss, and in Marvel Vs. Capcom 2 as a regular playable character
Thanos was born on Titan, a moon of the planet Saturn to Mentor and Sui-San. Due to a genetic quirk Thanos is born with the Deviant gene and as such resembles the Deviants - the Eternals' cousin race - more than his own people. Although treated fairly by his race, Thanos is mindful of his appearance and becomes distant, only keeping company with his brother Eros. Thanos matures to adulthood, and via the use of bionics and mysticism augments his abilities to easily become the most powerful of the Titanian-born Eternals.

Thanos is an extremley powerful individual. Being an Eternal, Thanos possesses super-human strength, endurance, reflexes, and agility. His skin is highly resistant to heat, cold, radiation, electricity, aging, toxins, etc. He is able to survive indefinitely without food or water. He has been "cursed" by Death with immortality. Also, his mind is resistant to most psychic attacks, and is capable of projecting blasts of cosmic energy from his eyes and hands.

He came to acquire the Cosmic Cube, which allowed complete manipulation of reality and the elements.

However, this was nothing compared to the power that Thanos recieved when he obtained the Infinity Gauntlet. He possessed unlimited control over the universe; more specifically: Time, Space, Power, Mind, Reality, and Soul.

PSYLOCKE

Psylocke is a character that appears in Marvel Super Heroes and Marvel Vs. Capcom 2, and also appears in the first Marvel Vs. Capcom as a helper character.

Psylocke was born Elisabeth Glorianna "Betsy" Braddock and raised in England. Born in the small town of Maldon, Essex, Betsy and her brothers had a very privileged life. She is the twin sister of Brian Braddock, better known as the superhero Captain Britain. She eventually came to join the X-Men and learn how to better use her powers after being rescued from Spiral and the Mojo World by The New Mutants. Some time later, in a desperate attempt to save her teammates from being murders by the Reavers, she activated the Siege Perilous portal, given to the X-Men by Roma as a last resort. Beings who entered the portal were cosmically judged and reborn into another life, given a "clean slate".

After emerging from the Siege Perilous, Psylocke was found by the Hand, a ninja clan. Their leader, Matsu'o Tsurayaba, had contacted Spiral in order to save the life of his brain-damaged lover, Kwannon. Spiral informed Matsu'o that Psylocke's telepathy could restore Kwannon, and Matsu'o accepted. With some physical and mental conditioning, Psylocke (inhabiting Kwannon's body) became the Hand's prime assassin, taking the name Lady Mandarin. She gained highly remarkable fighting skills and learned to focus her telepathic power into a "psychic knife" which appeared as a dagger of energy projecting outward from her fist. Lady Mandarin's first mission pitted her against Wolverine. Betsy's psychic knife attack revealed Wolverine's memories of who she used to be and allowed her to break free from the Hand's conditioning. Psylocke rejected her role as Lady Mandarin and escaped with Wolverine and Jubilee.

Much later, in an attempt to save Tabitha Smith from Sabretooth (Victor Creed) who had been living at the Mansion while pretending to be mentally handicapped, Psylocke engaged the homicidal mutant in battle. Although a deadly martial artist, she was no physical match for Sabretooth. Finally realizing she had no other choice, she attacked him with her psychic knife. Unfortunately, Creed had been stabbed in the head by Wolverine, losing the part of his brain affected by psionic attacks and her knife had no effect on him. She was already exhausted from their battle and could not manage to fight back, and was consequently mauled by Sabretooth. In a bid to save her life, Archangel and Wolverine went with Doctor Strange into the Crimson Dawn to retrieve a magical liquid that could heal her. The mission was successful, although the healing liquid produced side effects: a red dagger-shaped tattoo appeared over Psylocke's left eye, she gained the ability to hide in and teleport through shadows, and her personality took on a cold edge.