Guild Wars 2

Certain NPC controlled guns (Mortar, sniper rifle) unlock elite slot (and possibly all slots) and allow you to equip the related skill without meeting the level requirement.

My level 23 Mesmer can use Mist fire wolf.

I’m also assuming it unlocks the entire skill bar, allowing say, a level 1 to (If they had the skill points) fill in the utility slots and then continue about their day.

I can provide a screen to prove my finding

It happens with any bundle from what I can tell! Including engineer kits.