Wyll is an Origin companion whose default class is Warlock. His default setup naturally supports ranged magical pressure, Charisma-based dialogue checks and flexible utility.
Best role for Wyll
Wyll works well when your party wants a ranged caster who can still contribute consistent damage without using a large spell slot on every turn.
When Wyll fits your party
- You want Charisma-based social utility.
- You need ranged magical pressure.
- You are considering a Warlock multiclass.
- Your frontline and healing roles are already covered.
Build direction
Decide first whether you want him to remain a dedicated Warlock or become a multiclass character. That choice changes how valuable deeper Warlock levels are and how you spend the limited level budget.
Common mistake
Do not multiclass only because a popular combination exists. Make sure the second class solves a real party need or strengthens the exact role you want Wyll to perform.
Source: BG3 Wiki.