Karlach is an Origin companion whose default class is Barbarian. Her default identity is aggressive frontline melee built around Rage and strong close-range pressure.
Best role for Karlach
She is a strong fit when your party needs a durable melee attacker who can stay close to enemies and create space for less durable companions.
When Karlach fits your party
- You need a dependable frontline character.
- Your party has enough ranged damage but lacks melee pressure.
- You want a simple, direct combat role.
- Your support characters need someone else to hold enemy attention.
Build direction
Focus on the role first: frontline durability, heavy melee damage or a hybrid approach. Then choose feats and equipment around that role instead of stacking unrelated bonuses.
Common mistake
Do not assume that a frontline build must wear the heaviest possible gear. Movement, initiative and positioning can be as important as raw defenses depending on the encounter.
Source: BG3 Wiki.