Ninja (Fallout 76)

Ninja is a perk

Characteristics
Ninja multiplicatively increases the damage dealt by sneak attacks while using unarmed, one-handed and two-handed melee weapons.

Interactions
Ninja stacks with Covert Operative while using unarmed melee weapons. Using Covert Operative 3 and Ninja 3 will yield a x3.5 sneak attack multiplier on unarmed weapons.