Character » Sentinel appears in 85 issues.

    Marcus Langston used a magical book to alter his fate from a lowlife criminal to become a genius, armored superhero Sentinel and became the leader of Youngblood. Eventually, Marcus was revealed as a murderer when he killed Riptide and become a supervillain and formed a villainous Youngblood team called Badblood.

    Short summary describing this character.

    Sentinel last edited by aphillips17 on 05/05/20 06:22PM View full history

    Publication History

    Concept and Creation

    No Caption Provided

    Sentinel is created by Rob Liefeld. Sentinel was one of the original members of Youngblood since 1987 in Megaton Comics before he reappears in Image Comics in 1992. According to a promo, Sentinel could have pursued a highly successful career in genetic research with someone named Sonik before joining Youngblood.


    Image Comics


    When Marcus Langston was first approached by the U.S. Government in 1981 to develop a highly advance exo-skeleton for combat, he jumped at the chance. Unbeknownst to him, his involvement with the exo-skeleton would not end with its creation. As Sentinel, he combines his brilliant intellect with the awesome physical power afforded by his battle suit as leader of Team Youngblood, Youngblood's elite team for international crises.

    In one mission, Sentinel lost his right eyeball in combat.

    It's revealed that he is happily married to a woman named Elizabeth Hughes

    Awesome Comics

    Judgement Day

    In the miniseries Judgment Day, it was revealed that Marcus owned the Book of All Tales, a magical book that could alter reality and change people's fates. Marcus' fate was originally he had been headed for an early death as a thief, but he rewrote his destiny inside the book to make himself a superhero of an increasingly violent world. When Youngblood teammate Riptide discovered that Sentinel stole the book from her father, Storybook Smith, Sentinel murdered her and framed Knightsabre to cover his tracks. The truth behind Riptide's murder was eventually revealed in superhero trial when lawyer Toby Tyler discovered the book at his home and was taken into Supreme's custody in the Hell of Mirrors at his Citadel Supreme.

    Alan Moore's Youngblood

    Sentinel eventually escaped along with Supreme's rogues Televillain, Korgo, Shadow Supreme, Slaver Ant, and Vor-Em. Sentinel wanted to reclaim his leadership of Youngblood after his shame and when he discovered that Waxely Doyle is now funding the new Youngblood team, Sentinel formed Badblood consisting of Lounge Lizard, Satana, Speedwall, Poppy and Atomo to destroy his former comrades. They almost succeeded until Waxely came to Youngblood's rescue.


    Since Sentinel's unfortunate breakdown and removal from Youngblood, there have been at least three or four successors who have took up the mantle:

    • Brett Butler
    • Sentinel 2.0 (unknown...possibly Kiesha)
    • Kiesha Langston (Marcus' sister, also called Lady Sentinel)
    • Dolante Murray

    This edit will also create new pages on Comic Vine for:

    Beware, you are proposing to add brand new pages to the wiki along with your edits. Make sure this is what you intended. This will likely increase the time it takes for your changes to go live.

    Comment and Save

    Until you earn 1000 points all your submissions need to be vetted by other Comic Vine users. This process takes no more than a few hours and we'll send you an email once approved.