My toon is relentlessly cheerful, humorous, and optimistic to a fault. He's also maxed out both SAM and DRK at 70. If the jobquests were fully in his canon, he'd be making fun of Fray's and Sidurgu's edgelord dourness constantly, while saving a few key moments of solemn empathy for all the bullshit that Rielle eventually goes through.
Play the character archetype that you want to play. Jobs are just a skillset. Remember, this is the game where Hildibrand's foulmouthed mother is canonically a DRK for laughs, and the furthest person possible from being an edgelord. Unless you're playing WHM or BLM, in which case they can also potentially add an on-the-run illegal/verboten aspect to your toon.
Play the character archetype that you want to play. Jobs are just a skillset. Remember, this is the game where Hildibrand's foulmouthed mother is canonically a DRK for laughs, and the furthest person possible from being an edgelord. Unless you're playing WHM or BLM, in which case they can also potentially add an on-the-run illegal/verboten aspect to your toon.