berserker
Berserkers surrender themselves so completely to the fury they wield that it burns away fear, doubt, and mercy until only instinct remains. In battle, friend and foe must both evade the wild frenzy that the Berserker becomes as the edges between both blur. A Berserker is a frightful monstrosity, but such activity does not come without a cost, their frenzy pushing their body far beyond the breaking point causes them to be struck by lethargy at battle’s end.
Frenzy
You can descend into a frenzy when you Rage. If you do so, for the duration of your rage you can make a single melee weapon attack as a bonus action on each of your turns after this one. But when this rage ends, you suffer one level of Fatigue.
Mindless Rage
Losing many of your baser instincts, you can't be Charmed or Frightened while Raging. If you are charmed or frightened when you enter your rage, the effect is suspended for the duration of the rage.
Intimidating Presence
You can use your action to frighten someone with your menacing presence.
Success. The creature is unaffected and can't be affected by this feature again until you finish a long rest.
Failed. The creature is Frightened of you until the end of your next turn when you can use your action to extend the duration with another turn. This effect ends if the creature ends its turn out of line of sight or more than 60 feet away from you.
Retaliation
When you take damage from a creature that is within 5 feet of you, you can use your reaction to make a melee weapon attack against that creature.