Jeff The Land Shark

Tier List

Hero, Global, Bio, Controller, Retcon

Arena	★ ★ ★ ★ ★
Alliance War Offense	★ ★ ★ ★ ★
Alliance War Defense	★ ★ ★ ★ ★
Cosmic Crucible Offense	★ ★ ★ ★ ★
Cosmic Crucible Defense	★ ★ ★ ★ ★
Raid	★ ★ ★ ★ ★
Dark Dimension / Saga	★ ★ ★ ★ ★
Battleworld	★ ★ ★ ★ ★

Iso-8

When used in the Retcon team, Jeff the Land Shark should always be equipped with the Raider Iso-8 class—there’s simply no better choice. His attacks hit multiple enemies, which allows him to maximize his damage potential. More importantly, since Jeff almost always plays first in his team, there won’t be any Vulnerable effects on enemies for him to exploit as a Striker, making Raider by far the optimal option.

Outside of the Retcon team, Jeff can actually be a great Striker, especially if he’s paired with characters who are faster than he is. In those situations, he can use his Iso-8 attack to generate Ultimate Ability Energy for himself, helping him charge up his Ultimate more quickly. Since his Ultimate is normally only available on his fourth turn unless he gets extra Ability Energy in the meantime, the Striker class can help him use it sooner by accelerating his energy gain through those Iso-8 follow-up attacks.

T4 Priority

P – Passive ability

S – Special ability

B – Basic ability

U – Ultimate ability

All four of Jeff’s abilities can be upgraded to the Awakened level. It’s recommended to max out each ability so that when you unlock their Awakened versions later, you can upgrade them to the Awakened level without problems.

Passive – Unlocks the Time Warp mechanic, which is absolutely central to both him and the entire Retcon team. Whenever an enemy uses their Ultimate ability, Jeff applies Time Warp to himself or to a random Retcon ally who doesn’t already have it. On War Defense or in Battleworld, allies with Time Warp gain a massive +616% Speed, allowing them to take their turn almost immediately after receiving Time Warp—unless the enemy team prevents Speed stat increases.

Time Warp works like this: when the affected character’s turn comes up, they automatically attack a random enemy with their Ultimate Ability at level 7, without consuming their own Ultimate Ability Energy. After this attack, they lose Time Warp and proceed with their regular action. This means that Jeff and his Retcon allies can, if they have Time Warp, attack twice in a single turn—first with a passive, max-level Ultimate, and then with their normal move. This mechanic gives the Retcon team a huge edge, letting them unleash devastating attacks and maintain constant pressure on the enemy.

With Awakened Passive, Jeff gains a powerful effect: On War Defense or in Battleworld, if he has 4 Retcon allies, at the start of his turn (if he doesn’t have Exhausted), he applies Time Warp to a random Retcon ally who doesn’t already have it. This means Time Warp now triggers not only when enemies use Ultimates, but also automatically on Jeff’s turn—making it much more frequent and greatly boosting the Retcon team’s offense, defense, sustain, mitigation, and overall power.

Additionally, upon an enemy’s death during War Defense or Battleworld, Jeff will attack the most injured enemy instead of the most injured enemy’s support character. This means Jeff will always attack an enemy on War Defense or in Battleworld when an opponent dies, even if there are no Support characters on the enemy team. So, his attack will reliably target the most injured enemy, ensuring consistent offensive pressure.

Special – Increases its Piercing damage and extends Silence to 2 turns instead of just 1. This can be a game-changer, especially since Gwenpool often takes her turn right after Jeff and can apply Trauma for 2 turns to all enemies. With Trauma, opponents won’t be able to easily remove Silence, leaving them unable to buff themselves, or debuff your team, or reduce positivities from your team. Extending Silence to 2 turns greatly increases your team’s control over the battle for a longer period, and boosts your chances of securing victory.

With Awakened Special, Jeff flips 2 negative effects into positive effects on a random Gwenpool ally. This means that after using his Special, Jeff can remove harmful effects from Gwenpool and even turn them into buffs, which greatly benefits the entire Retcon team.

Basic – Deals increased Piercing damage and generates 1 Ultimate Ability Energy for himself. This is especially important because Jeff’s Ultimate is normally only available on his fourth turn, so this upgrade helps him use it earlier. The effect is even stronger if Jeff is equipped with the Striker Iso-8 class, as his follow-up attacks can generate additional Ultimate Ability Energy, allowing him to unleash his Ultimate sooner and more often in battle.

When Jeff’s Basic is Awakened, he generates 1 Special Ability Energy for all Retcon allies, not just Gwen. This helps the whole team use their Special abilities more often, making Jeff even more valuable in the Retcon team.

Ultimate – Allows him to apply Trauma to all enemies for 2 turns instead of 1. While this upgrade isn’t absolutely crucial—mainly because Jeff won’t have many opportunities to use his Ultimate in most battles—it does become more valuable in Battleworld, where fights tend to last longer, and characters get more chances to use their abilities. In War Defense, by the time Jeff uses his Ultimate, the outcome is usually already decided, so the extra turn of Trauma isn’t as essential. Plus, Gwenpool can apply Trauma to all enemies for 2 turns right at the start, ensuring that the enemy team is already covered by this debuff early on.

At the Awakened level, Jeff’s Ultimate lets him start with 2 Ultimate Ability Energy instead of 1. This allows him to use his Ultimate ability earlier in battle.

Infographics

About Character

Jeff the Land Shark is one of Marvel’s most delightful and unexpected heroes. Originally introduced as a quirky, adorable pet, Jeff quickly won over fans with his unique charm and surprising usefulness. Despite his small size and cute, harmless appearance, Jeff is a loyal and courageous companion who often finds himself in the middle of wild superhero adventures.

What makes Jeff special isn’t traditional superpowers, but his resilience, tenacity, and the sheer enthusiasm he brings to every situation. As a land-dwelling shark, Jeff is surprisingly agile and resourceful, able to get out of tight spots and even help his allies in creative ways. He often teams up with characters like Gwenpool, Deadpool, and Squirrel Girl, fitting right into groups that embrace fun and a bit of chaos.

In battle, Jeff punches well above his weight. He can assist in overwhelming enemies, support his teammates, and even turn the tide of a fight with clever moves. While he doesn’t talk, his expressive personality comes through in his actions, making him a fan favorite and a symbol of positivity.

Jeff’s stories are filled with humor and heart, showing that you don’t have to be big or flashy to make a difference. He reminds us that bravery comes in all shapes and sizes, and that sometimes, the most unlikely heroes can have the greatest impact. Whether he’s helping out in a big fight or just bringing joy to his friends, Jeff the Land Shark proves that a little bit of heart—and a lot of teeth—can go a long way.

Jeff the Land Shark is far more than just an adorable face—he’s a ferocious Controller who brings unique disruption to the battlefield. From the very start of a fight, Jeff takes a bite out of enemy plans by inflicting Slow on the entire opposing team On Spawn, immediately reducing their momentum. He doesn’t stop there; Jeff continues to apply negative effects throughout the battle, with one of his signature debuffs being Trauma, which prevents enemies from removing their own negative statuses.

What truly sets Jeff apart is his extraordinary Passive Ability. Whenever any enemy uses their Ultimate Ability, Jeff responds by granting a special new effect called Time-Warp to himself or to a random Retcon ally. Time-Warp is a game-changing buff: when the character with Time-Warp takes their next turn, they automatically unleash their own Ultimate Ability for free—no energy cost required. This allows Jeff’s team to rapidly turn the tide, countering powerful enemy moves with devastating responses of their own.

But Jeff’s impact goes even further in War Defense and Battleworld. While a character has Time-Warp, they also gain an incredible +616% Speed, letting them act almost instantaneously. This combination of rapid action and free Ultimate Abilities gives the team a massive advantage, allowing for explosive combos and overwhelming pressure on the enemy.

In short, Jeff the Land Shark isn’t just cute—he’s a strategic powerhouse. His ability to slow down enemies, apply debilitating effects, and supercharge his allies makes him an invaluable asset, especially when working with the Retcon team. With Jeff in your lineup, you can expect both chaos and control, all delivered with a toothy grin.

You can find detailed information about Jeff the Land Shark on the Retcon team page HERE.

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