Jeff the Land Shark

Jeff the Land Shark is a small, cartoonishly adorable shark who somehow walks on land and has charmed his way into the lives of various Marvel heroes, including Kate Bishop and Gwen Poole, serving as an unlikely mascot and companion rather than a fighter.

Few characters in recent Marvel memory have burst onto the scene with quite the infectious charm of Jeff the Land Shark — a delightfully absurd Modern Age creation who made his catalog debut in Captain Marvel #9 (2023), brought to life by artist Juan Frigeri. In just a handful of years, Jeff has racked up appearances across Gwenpool, G.O.D.S.: One World Under Doom, and Captain Marvel, sharing pages with the likes of Kate Bishop, Gwen Poole, and Peter Parker himself. With 18 appearances and counting, this little land-dwelling shark has carved out a genuinely beloved niche in the Marvel universe — proof that you don't need decades of history to become a fan favorite worth following.