Marvel Rivals taps into a niche character type with Jeff the Land Shark and there's no reason for it to quit while it's ahead with cute animal Heroes.

Jeff the Land Shark was fully introduced by name and such in West Coast Avengers vol. 3 #7. A projectile water move that will heal a bit of HP to whatever teammate is hit by it. A projectile water move that will continuously hit an enemy for as long as the water stream is on them.