how to deal with overload Champions

[molten topaz]

Are there armor mods or weapon perks that cause them to get Stunned? Or do certain weapons stun them by default?

[manic quarry]

Check ur seasonal artifact, overload weapons include le monarque, thunderlord, and maybe more

[molten topaz]

So there is just a handful weapons each Season that have the ability to stun them, no other way ?

[wraith grail]

yes

[minor lichen]

there are a handful of exotics that will also stun champions

divinity for example will stun overloads

[spring shale]

There are exotic weapons with Intrinsic Anti-Champion mods

The overload ones are the ones bails answered

And for seasonal mods, check inside the artifact which ones have the "Overload" text