Jeff the Land Shark

Jeff the Land Shark is a playable character in the game Marvel Rivals. He is a strategist and mainly focuses on healing and supporting his team.
His abilities are split into three categories which are normal attacks, abilities, and team-up abilites.

Normal Attack

Joyful Splash

Jeff squirts water out of his mouth to heal his teammates

Aqua Burst

Launch a burst of water out of Jeff's mouth to deal damage to enemies

Abilities

It's Jeff (Ultimate)

Jeff swallows up enemies and allies in a large circle, dealing damage to enemies in his mouth and healing allies. Jeff can also spit out his enemies or allies.

Hide and Seek

Jeff dives "under the water" exposing only his fin allowing him to move faster and heal himself

Healing Bubble

Jeff spits out a bubble causing allies to heal if collected. This also knocks away any enemies when collected

Oblivious Cuteness

Jeff the Land Shark takes reduced damage from headshots

Team-Up Abilities

Frozen Spitball

Luna Snow infuses Jeff's attack aqua burst to deal more damage and slow enemies hit

New Friends

Jeff the Land Shark can ride on Groot's shoulder to take reduced damage

Here is a small description of Jeff the Land Shark from Marvel Rival's website:

Most landsharks are vicious creatures of the deep... but not Jeff! This adorable and mischievous little landshark brings splashes of joy and healing to every battle. But if the tide turns, Jeff can morph into a voracious beast, swallowing an army of foes in one giant gulp!