If you’re a fan of the “Guardians of the Galaxy” — and who isn’t, really? — you can’t help but be a little interested in “The Killer’s Game.” In theaters this week, the action comedy stars Dave Bautista, but it also boasts Pom Klementieff. The two, of course, portray Drax and Mantis, respectively, in the Marvel Cinematic Universe and are comedic gold in a couple of the big-screen “Guardians” adventures, as well as in the hilarious “Guardians of the Galaxy Holiday Special” from 2022.

That pairing, however, isn’t enough to lift “The Killer’s Game” above the level of mediocrity, the tonally challenged flick squandering a vaguely promising first act by devolving into a warmed-over “John Wick” wanna-be. Helmed by JJ Perry, the director of the similarly uneven 2022 Netflix release “Day Shift,” “The Killer’s Game” plays like two separate movies for much of its roughly hour-and-45-minute runtime. When the beefy Bautista, cast as renowned assassin Joe Flood, shares the screen with veteran actor Ben Kingsley, who portrays his mentor, or co-star Sofia Boutella, who plays his love interest, it fits roughly within reality as we know it and even finds an emotional center; at all other times, it’s an over-the-top kill-fest, with skulls crushed, body parts severed and impalings to spare.

Were those action scenes topnotch — aka “Wick”-level — and not merely passable, that would be a bit more forgivable. Written by Rand Ravich and Jam.