You can attack twice instead of once whenever you take the Attack action on your turn.

Spend moxie to make two quick unarmed attacks as a bonus action.

You have a reserve of stamina you can draw on to regain hit points as a bonus action. At 20th level, this becomes an essential burst of recovery and grit.

A devastating close-range strike that can immediately follow with a grapple or shove.

Spend moxie to strike and then sprint or slip away.

Choose a Fighting Style that shapes your martial technique. Vivian fights best through unarmed combat and control, reflecting a close-quarters style built around pressure, timing, and relentless offense.

You learn to use mastery properties with weapons you are proficient with, and you can prepare for battle by mastering specific weapons. Vivian's style emphasizes improvised weapons and close-quarters control.

You can push yourself beyond normal limits to act again, gaining an additional action on your turn for a brief burst of overwhelming tempo.

You can bolster your resilience and focus by using Intelligence, Wisdom, or Charisma checks and saving throws in the moment, even when under pressure.

You gain a martial subclass. Vivian's combat style blends psionic discipline with hard-nosed underground wrestling.

You gain a feat or ability score improvement. As a 20th-level fighter, Vivian has multiple opportunities to refine her physical perfection and streetwise combat tricks.

Your tactical instincts let you reposition rapidly in combat, helping you keep pressure on the right target.

You gain another feat or ability score improvement.

Your subclass grants a protective psionic field. When an ally or yourself is threatened, you can reduce damage by projecting force-like resistance.

Your psionic power can amplify a hit with extra force damage and battlefield pressure.

You gain another feat or ability score improvement.

Your combat experience makes you hard to pin down. When you fail a Strength, Dexterity, Constitution, or Charisma check, you can swagger your way toward success by adding your Fisticuffs die, as long as the feature is available to you.

When you hit with an Unarmed Strike or Pugilist weapon, you can deal extra force or weapon damage through disciplined control and nerve.

You can draw upon your fighting spirit to gain temporary hit points and shrug off punishment, reflecting a boxer who refuses to stay down.

When you are hurt, you can regain expended moxie and, if bloodied, gain a burst of temporary hit points, representing stubborn refusal to stay down.

When you use Bloodied But Unbowed while bloodied, your strikes deal extra damage for a minute, fueled by endurance and exhaustion.

When you hit with an Unarmed Strike, you can roll extra damage once per turn, or forgo it to force an opening that leaves the target vulnerable or distracted.

Your carrying capacity is tremendous, your jumps are enhanced, and striking objects with your fists can break them with brutal efficiency.

At the start of each of your turns, you can shake off exhaustion or a debilitating condition, reflecting a fighter who refuses to be controlled.

Your grapples are brutally efficient. You can deal damage to creatures you already have grappled at the start of your turn without spending an action.

When a creature resists your grapple or shove, you can spend moxie to impose disadvantage on its contest.

When you hit with an Unarmed Strike and do not use a mastery property, you can apply both Grapple and Shove options, turning hits into holds.

You become exceptional at controlling the ring, gaining expertise in Athletics or Acrobatics and becoming a far more dangerous grappler.

When you grapple someone, you gain half cover against outside attackers, and you can redirect missed attacks toward someone you are holding.

Your grappling dominance lets you count as one size larger for grapple and shove options, and you can move held creatures without extra movement if they are your size or smaller.

You can hit harder when you need to, or sacrifice accuracy for brutal efficiency by dealing maximum damage with a chosen strike. Moxie fuels the tempo of your violence.

You can make improvised weapons and unarmed strikes function like a true fighting style, including using the Sap mastery property on improvised weapons.

While unarmored or lightly armored and not using a shield, your armor class is based on your composure and Constitution rather than gear.

You have a reliable network of criminal contacts who can provide information, shelter, and discreet help when the law is not supposed to be watching.