Warrior Thug Sidekick (lvl 8)

Pack Tactics. The thug has advantage on an attack roll against a creature if at least one of the thug's allies is within 5 feet of the creature and the ally isn't incapacitated.

3rd-level Warrior feature
The sidekick's attack rolls score a critical hit on a roll of 19 or 20 on the d20.

6th-level Warrior feature
The sidekick can attack twice, instead of once, whenever it takes the Attack action on its turn.

The number of attacks increases to three when the sidekick reaches 15th level.

If the sidekick has the Multiattack action, it can use Extra Attack or Multiattack on a turn, not both.

7th-level Warrior feature

The sidekick has advantage on initiative rolls.

Multiattack. The thug makes two melee attacks.

Mace. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 7 (1d6 + 4) bludgeoning damage.

Heavy Crossbow. Ranged Weapon Attack: +4 to hit, range 100/400 ft., one target. Hit: 6 (1d10+1) piercing damage.

2nd-level Warrior feature
The sidekick can use a bonus action on its turn to regain hit points equal to 1d10 + its level in this class. Once it uses this feature, it must finish a short or long rest before it can use it again.

Defender. The sidekick can use its reaction to impose disadvantage on the attack roll of a creature within 5 feet of it whose target isn't the sidekick, provided the sidekick can see the attacker.