Warner Bros. Interactive and NetherRealm studios have unveiled the next downloadable Fighter Pack for Injustice 2, featuring three new playable characters -- one of which is a big surprise: Mike Mignola's Hellboy.

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He's joined in the DLC pack by Aquaman's arch-enemy Black Manta and Mortal Kombat's Raiden. Although no release date has been announced, the first gameplay of Black Manta will be unveiled Sunday at 4 p.m. ET on NetherRealm's Twitch channel.

The reveal trailer, released this morning, depicts the beaten bodies of the previous three fighters added to the game, and then introduces Raiden, Black Manta and Hellboy, whose closing line, "This just got a whole lot more interesting," couldn't be more apt.

Fighter Pack 2 featuring Black Manta, Raiden and Hellboy will also be available to players who purchased the Injustice 2 Ultimate Edition. At least one more Fighter Pack featuring three new characters is expected to be released.

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Developed by NetherRealm for Warner Bros. Interactive Entertainment, the sequel to the hit 2013 video game Injustice: Gods Among Us continues the storyline, with Batman and his allies work toward putting the pieces of society back together while struggling against those who want to restore Superman’s regime. However, in the midst of that chaos, a new threat appears that will put Earth’s existence at risk.