Lady Sif

Mary MacPherran (portrayed by Jameela Jamil), also known as Titania, is a social media influencer with incredible strength who is obsessed with She-Hulk, ultimately becoming her rival.

As of 2026, the character has appeared in one project: the Disney+ series She-Hulk: Attorney at Law (2022).

Makkari (portrayed by Lauren Ridloff) is an Eternal who can move at superhuman speeds. She is implied to harbour romantic feelings for Druig.

The character is the first deaf superhero in the MCU. Ridloff stated that she started running and muscle-building to have "the symmetry of somebody who looks like a sprinter".

As of 2026, the character has appeared in one project: the film Eternals (2021).

Malekith the Accursed (portrayed by Christopher Eccleston) is the king of the Dark Elves who faces Thor in 2013. Eons ago, he faces Odin's father Bor and is defeated, being exiled to an alternate reality. He is awakened when the Aether is released, and he merges with it, plotting to submerge Earth in darkness during the convergence. He is killed when his own ship crushes him on Svartalfheim.

As of 2026, the character has appeared in one project: the film Thor: The Dark World (2013). An alternate universe variant of Malekith (voiced by Steven French) appeared in one project: the Disney+ animated series What If...? (2021–2024).

Flint Marko (motion-captured by Jon Watts and voiced by Thomas Haden Church), also known as the Sandman, is a small-time thief from an alternate universe who received an ability to transform into sand. He is one of the villains imprisoned by Doctor Strange, and rejects the cure that Spider-Man (Peter-1) attempts to give him. He is eventually cured and safely sent to his own dimension.

As of 2026, the character has appeared in one project: the film Spider-Man: No Way Home (2021). Church reprises his role from Sam Raimi's Spider-Man film series (2002–2007).

Martinex (portrayed by Michael Rosenbaum) is a member of Stakar Ogord's team of Ravagers. He visits Yondu Udonta on Contraxia along with Stakar to remind him that he is in exile for breaking the Ravagers' code. After Yondu sacrifices himself to save Peter Quill, Martinex and Stakar are moved by his sacrifice, and he and the other Ravagers attend his funeral. The two of them decide to bring the rest of the team back together to honor him.

As of 2026, the character has appeared in two projects: the films Guardians of the Galaxy Vol. 2 (2017) and Guardians of the Galaxy Vol. 3 (2023).

Mar-Vell (portrayed by Annette Bening) is a Kree scientist who rejected her species' war with the Skrulls. She fled to Earth in the 1980s and adopted the alias of Dr. Wendy Lawson, a physicist at Project Pegasus. Using the Tesseract, she sought to develop an experimental engine that would have allowed the Skrulls to settle beyond the reach of the Kree Empire. She is killed by Yon-Rogg, though she is able to instruct Carol Danvers to destroy the engine before Yon-Rogg is able to seize the device. The Supreme Intelligence later takes on her appearance while conversing with Danvers.

As of 2026, the character has appeared in one project: the film Captain Marvel (2019). An alternate universe variant of Mar-Vell (voiced by Keri Tombazian) appeared in one project: the Disney+ animated series What If...?.

Mila Masaryk (voiced by Sarah Natochenny) is a Russian criminal in an alternate universe who is part of a group of Russian bank robbers. During a robbery, Mila's accomplices—Dmitri Smerdyakov, Mikhail Sytsevich, and Roxanna Volkov—are arrested, while she escapes with the stolen money and takes it to the renegade scientist Otto Octavius, who sells Mila a high-tech helmet that shoots lasers and analyzes and predicts opponent's movement patterns. Mila, calling herself Unicorn, uses the helmet to help her cohorts escape from prison and nearly kills Spider-Man, but is stopped by Mikhail, who removes Mila's helmet, and Spider-Man apprehends them both.

As of 2026, the character has appeared in one project: the Disney+ animated series Your Friendly Neighborhood Spider-Man (2025–present).

Phineas Mason (portrayed by Michael Chernus) is a weapons maker and part of a salvage company alongside Adrian Toomes, Herman Schultz, and Jackson Brice. When the salvaging company goes out of business due to the Department of Damage Control, Mason helps Toomes steal leftover technology from the Avengers' battles and build advanced weapons out of the technology, such as Toomes's flight suit and modified versions of Brock Rumlow's vibro-blast emitting gauntlets. While his assistants were defeated by Spider-Man and arrested by the authorities, Mason's fate is left unknown.

As of 2026, the character has appeared in one project: the film Spider-Man: Homecoming (2017).

Rick Mason (portrayed by O-T Fagbenle) is an old friend of Natasha Romanoff's S.H.I.E.L.D. past. In 2016, he helps her while she is a fugitive. In 2026, he assists Nick Fury.

As of 2026, the character has appeared in two projects: the film Black Widow (2021); and the Disney+ series Secret Invasion (2023).

Ebony Maw (voiced and portrayed via motion capture by Tom Vaughan-Lawlor) is an adopted son of Thanos and member of the Black Order who is killed in space after being defeated by Tony Stark and Peter Parker. A past version of Maw from 2014 travels through time with Thanos's forces to stop the Avengers from foiling his plans. However, they are all disintegrated when Stark uses the Infinity Gauntlet.

As of 2026, the character has appeared in one project: the film Avengers: Infinity War (2018). Alternate universe variants of Maw appeared in two projects: the film Avengers: Endgame (2019); and the Disney+ animated series What If...?.

William "Billy" Maximoff (portrayed by Baylen Bielitz as a five-year old and Julian Hilliard as a ten-year old) is the son of Wanda Maximoff and Vision, and the younger twin brother of Tommy Maximoff. He was created by Wanda using chaos magic within the Westview anomaly in Westview, New Jersey, a reality modeled a