Bohdan Khomenko

The cyborg known only as Bonebreaker was the original leader of the band of cybernetically-enhanced assassins known as the Reavers. After suffering a humiliating defeat at the hands of the superpowered mutant adventurers known as the X-Men, Bonebreaker sought out the renegade White King of the Hellfire Club, Donald Pierce, for help in rebuilding himself and his Reavers. Pierce did so, and, seizing the opportunities presented to him to further his anti-mutant crusade, assumed command of the group himself.

Later, the Reavers were seemingly destroyed by giant robotic Sentinels summoned from the future by the time-traveling mutant Trevor Fitzroy. However, the Reavers did not die, and were rebuilt by Pierce to assist him in capturing Milo Thurman, a former government employee who possessed incredible natural prophetic abilities. Pierce intended to transform Thurman into a cyborg Reaver under his control, but his plan was foiled by Thurman's former lover, the mutant mercenary known as Domino. However, before Domino could destroy the Reavers' base, Pierce managed to download almost 60% of Thurman's consciousness into his own mind.

Pierce later returned in Sydney, Australia as a thrall of the psionic entity known as the Shadow King. Through Pierce, the Shadow King sent the Reavers to capture the X-Man named Rogue, whom the Shadow King sought to make his consort. However, Rogue's will prevailed, the Shadow King was defeated, and Pierce and the Reavers were taken into custody by the Australian authorities.

Bolivar Trask is a fictional supervillain appearing in American comic books published by Marvel Comics. He is a military scientist whose company Trask Industries is well known as the creator of the Sentinels. He is also the father of Larry Trask and Madame Sanctity.

Bolivar Trask appears as the main antagonist in the 2014 film X-Men: Days of Future Past, portrayed by Peter Dinklage.

Bob, Agent of Hydra is a fictional character appearing in American comic books published by Marvel Comics. The character is depicted as an antihero and a sidekick of Deadpool. A former member of the terrorist agency Hydra, he defected to help Wade Wilson, but has kept his Hydra uniform.

Bob had a cameo in the 2016 feature film Deadpool where he was portrayed by Rob Hayter.

Blind Al is a fictional character appearing in American comic books published by Marvel Comics. She is commonly depicted as a supporting character of the antihero Deadpool.

Al (also known as Althea or Blind Alfred) first appeared in Deadpool #1, living with him in "The Deadhut", his house in San Francisco. At first her relationship with him was unclear, but over time it would reveal itself as highly complex and bizarre.

Actress Leslie Uggams portrayed Blind Al in the 2016 feature film Deadpool and its 2018 sequel. She will also reprise the role in the untitled third film, set in the Marvel Cinematic Universe (MCU).

Blastaar, sometimes called the Living Bomb-Burst and Blasstaar, is a fictional character appearing in American comic books published by Marvel Comics. Blastaar is an opponent of the Fantastic Four and lives in the Negative Zone. He is also an enemy of Annihilus, another Fantastic Four villain.