Playing a firbolg as an archfey warlock is certainly manageable although the motivations behind their warlock pact might be uncommon. Possibly some terrible minute of disaster from the forest pressured a firbolg, in desperation, to make this type of deal for that collective good. Barbarians are rare amongst the firbolgs https://edgarngyrh.blogolize.com/the-smart-trick-of-d-d-genasi-5e-that-nobody-is-discussing-67610719