Percival at the Arena of the Champions

After arriving in Dim Hollow, a recruiter repeatedly attempts to gain Percival's attention and bring him to fight in the Arena of the Champions.
He (or the party) fights three levels of opponents:
The Novice Gladiator: His name is Sabelo, and he is a young man from a small village on the outskirts of the kingdom. He was orphaned at a young age and taken in by a group of gladiators, who trained him in the art of combat. Sabelo is eager to prove himself in the arena and make a name for himself.

Novice Gladiator CR: 3

Medium humanoid, any

Armor Class: 17

Hit Points: 45 (6d8+18) 6d8+18

Speed: 30 ft

STR

14 +2

DEX

14 +2

CON

16 +3

INT

10 +0

WIS

10 +0

CHA

10 +0

Saving Throws: STR +4, DEX +4

Languages: Common

Challenge Rating: 3

Actions

Flail. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage.
Javelin. Ranged Weapon Attack: +4 to hit, range 30/120 ft., one target. Hit: 9 (1d6 + 4) piercing damage.

The gladiator is a seasoned fighter, honed by years of training and combat in the brutal arenas. Standing at an imposing height, their muscular physique is adorned with scars, testament to their prowess in battle. With a fierce determination and a steady hand, they face their opponents with confidence, ready to prove their worth in the arena.

The Veteran Gladiator: Her name is Aria, and she is a seasoned fighter who has spent many years in the arena. She was once a slave, taken from her home and forced to fight for her freedom. Aria is a skilled warrior and a master of the spear, and she has a reputation for being fierce and relentless in combat.

Aria the Experienced Gladiator CR: 5

Medium humanoid, any

Armor Class: 16

Hit Points: 65 (10d8+20) 10d8+20

Speed: 30 ft

STR

14 +2

DEX

14 +2

CON

14 +2

INT

10 +0

WIS

10 +0

CHA

10 +0

Saving Throws: STR +4, DEX +4

Skills: Athletics +4, Perception +3

Damage Resistances: poison

Condition Immunities: charmed, frightened, paralyzed, poisoned

Languages: Common, Elvish

Challenge Rating: 5

Actions

Halberd. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Her name is Aria, and she is a seasoned fighter who has spent many years in the arena. She was once a slave, taken from her home and forced to fight for her freedom. Aria is a skilled warrior and a master of the spear, and she has a reputation for being fierce and relentless in combat.

The Champion Gladiator: His name is Titus, and he is a legend in the arena. He has spent his entire life training and fighting, and has never been defeated. Titus is a skilled swordsman and a master of all weapons, and he is feared and respected by all who face him in combat. Despite his fearsome reputation, Titus is a kind and compassionate man, and he uses his fame and wealth to help those in need.

Titus the Champion Gladiator CR: 7

Medium humanoid, any

Armor Class: 18 (full plate, shield)

Hit Points: 90 (12d8+36) 12d8+36

Speed: 30 ft

STR

16 +3

DEX

13 +1

CON

16 +3

INT

10 +0

WIS

14 +2

CHA

12 +1

Saving Throws: STR +5, CON +5

Skills: Athletics +5, Perception +4, Intimidation +3

Damage Resistances: slashing

Damage Immunities: poison

Condition Immunities: charmed, frightened, paralyzed, poisoned

Languages: Common

Challenge Rating: 7

Evasion. When the champion gladiator is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, it takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Actions

Greatsword. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.
Throwing Axe. Ranged Weapon Attack: +5 to hit, range 30/120 ft., one target. Hit: 10 (1d6 + 5) piercing damage. Ammunition: 3

Reactions

Dodge. The champion gladiator may use a reaction to increase it's AC by 2 and roll 10ft whenever an attack misses it. 

His name is Titus, and he is a legend in the arena. He has spent his entire life training and fighting, and has never been defeated. Titus is a skilled swordsman and a master of all weapons, and he is feared and respected by all who face him in combat. Despite his fearsome reputation, Titus is a kind and compassionate man, and he uses his fame and wealth to help those in need.

Marzen von Zellerin, the Blade of the Three Headed Legion: Before the fight starts, Percival will see Marzen get stabbed in the back of her leg by a guard, causing her to be unable to fight a fair fight.

Marzen von Zellerin CR: 9

Medium humanoid (tiefling), neutral

Armor Class: 18

Hit Points: 75 (10d8+30) 10d8+30

Speed: 30 ft

STR

14 +2

DEX

14 +2

CON

16 +3

INT

16 +3

WIS

14 +2

CHA

10 +0

Saving Throws: STR +4, CON +5

Skills: Athletics +4, Perception +4, Intimidation +2, History +5

Languages: Common, Elvish, Undercommon, Infernal

Challenge Rating: 9

Tactical Expertise. Marzen has advantage on Intelligence (History) checks relating to military tactics.

Actions

Longsword. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage.

Legendary Actions

Marzen can use her action to make one longsword attack. Marzen can use her action to use its Tactical Expertise ability. Marzen can use her action to take the Dodge action.

Marzen von Zellerin stands six feet and four inches tall, a towering figure of steel and iron. They carry a shield on their back, with their longsword slung beneath it across the small of their spine. Under their full plate armor, Marzen's red skin and blue-red eyes are prominent features, and their horns flow back over their head, fully betraying their tiefling heritage.