Every wrestler in Multiverse has their unique moves and play styles, whether you’re hitting enemies as Batman or… everything that Jake, the dog, usually does. However, if you play more with each character, his championship level increases. Mastery is essentially a progression path for all characters that unlock different rewards.
This includes perks such as perks that can offer passive bonuses in Action. In addition, when a character reaches mastery level 6, they can use “equip Allies”.”This allows the use of an advantage of your teammate in games. If both team members have the same advantage in their equipment, they can stack their effects and thus obtain increased advantages. Three perks can be equipped in a gear with a character’s signature perk.

So the question is – what are the best advantages in the game? Some are more suitable for the Rude, while others offer improved advantages. Of course, they also have advantages that are almost indispensable regardless of the situation. Some perks are tied to certain characters, so you need to improve your mastery to unlock them.
To get a better idea of the best benefits, check out the list of levels from VoiD, a professional Counter Logic Gaming player who has experience with Super Smash Bros.Ultimate. It divides the different benefits into categories such as Essential, Best Offense, Best Defense, Best Utility and Character Specific (which includes all the different benefits that are best for certain characters). You can watch the video below to get his in-depth thoughts on the rankings.
Without further ado, here are the best benefits, starting with The essential step:

Snowball effect – unlocked with Arya (championship level 2) and Shaggy (championship level 11). When used alone, it deals an additional 7% damage to the enemy that takes the most damage. Stacked, the two players deal an additional 15% damage to the wrestler who takes the most damage.
Toon Elasticity-unlocked with (mastery level 4). When used alone, you get a 20% reduction in the bounce speed of the floor and wall. When stacked, the jumping speed of the floor and the wall is reduced by 25% for both players.
Tasmanian Trigonometry-unlocked with Jake the Dog (championship level 13), Reindog (championship level 12) and Taz (championship level 7). When used alone, it receives a basic recoil impact increased by 15%. When both players are stacked, they have a base recoil impact increased by 25%. The influence of recoil allows you to change the angle of the direction in which you were thrown. The increase gives you more control when you are pushed back, preventing life-threatening falls.
Three jumps – unlocked with Harley Quinn (championship level 4), Jake the Dog (championship level 11), Steven Universe (championship level 2) and Superman (championship level 2). By itself, it grants an extra jump when it hits an enemy in the air. But when the team is stacked, it always has an extra jump in the air.
Next, let’s look at the best benefits for lawbreakers:

Lumpy Space Punch-unlocked with Jake the Dog (championship level 2) and Shaggy (championship level 2). Alone, allows melee strike to inflict five percent more damage in the air. Stacked, The team deals an additional 10% damage with melee strikes in the air.
Defeat them while they’re down – with Batman (championship level 7), Harley Quinn (championship level 11) and watchdog (championship level 7) unlocked. When used alone, it can deal an additional 5% damage to weakened enemies. But if the team is stacked, it can deal 10% more damage to weakened enemies.
MultiVersus is currently available for Xbox One, Xbox Series X/S, PS4, PS5 and PC. Player First Games recently confirmed that Season 1 starts today with Morty, who joins the team on August 23rd.