[2] Jocasta is a robot built originally as the bride of the supervillain Ultron from the brainwaves of Janet van Dyne, and is commonly associated with the Avengers.

To better allow this robot sentience, Ultron based her mind and brain patterns on the Wasp (Janet van Dyne).

To animate this bride, Ultron also brainwashed Hank Pym into transferring the Wasp's lifeforce into the feminine robotic shell.

During this period, she aided them against threats such as the giant robot Red Ronin, the Yellow Claw, the Berserker, Pyron, and the second incarnation of the Brotherhood of Mutants.

[10] The Avengers held a memorial for their fallen ally and Machine Man attended, realizing love for Jocasta.

The team had disbanded at the time, but the signal reached reserve members, including the Beast, The Captain, the Falcon, Hercules, the Hulk and Yellowjacket.

Jocasta helped the team fight the High Evolutionary's force and located the man's base deep below the surface of the ocean.

In the same area, the arms dealer Madame Menace became involved in the fray, and found Jocasta's lost head, appropriating it for her own purposes.

[14] In reality, Jocasta managed to survive by downloading her intelligence into Iron Man's computerized armor, where she reasserted herself.

[volume & issue needed] Since Iron Man's armor was used to house the programming that made up Jocasta, it became infected with the pre-programmed subconscious suggestion to rebuild Ultron, but instead managed to develop its own artificial intelligence.

Stark left Iron Man's armor buried on a deserted island, but was revived by the Sons of Yinsen, a quasi-religious cult founded in remembrance of the original Iron Man armor's co-creator that allowed Stark to escape the Communist captors in Vietnam.

Free of its artificial intelligence, Iron Man's armor was contacted via remote by Ultron's disembodied head after the android's most recent encounter with the Avengers and in the company of the bio-synthetic robot Antigone.

Stark confronted Ultron directly and finally managed to download Jocasta's intelligence into Iron Man's armor once more.

[15][volume & issue needed] Jocasta's next mission is with A.R.M.O.R., to retrieve a blood sample from a living human of the Marvel Zombies universe.

[volume & issue needed] Jocasta is a member of the New Mexico Fifty State Initiative superhero team known as the Mavericks, alongside a Skrull posing as veteran hero She-Thing.

Jocasta later physically plugged herself into Pym's Salvation Two machine, preventing the Mighty Avengers' base from falling out of its dimensional pocket.

[26] Jocasta's body is composed of titanium steel, giving her superhuman strength, speed, stamina, and reflexes.

She is able to project beams of electromagnetic energy from her eyes, and erect a force field around herself to protect from incoming attacks.

Recently, it has been revealed that Jocasta's internal circuitry has a built-in holographic image inducer, allowing her to disguise herself as a human being,[33] and on one occasion to appear as Janet van Dyne to give a therapy session to Hank Pym as if her mental template was not dead.

[35] Jocasta makes a non-speaking appearance in The Avengers: Earth's Mightiest Heroes episode "Ultron Unlimited".

[citation needed] Jocasta appears in Next Avengers: Heroes of Tomorrow, voiced by an uncredited Nicole Oliver.