Natural Statuses/Abilites

I've been wondering. Is it possible to give a specific character certain specific statuses or bonuses like True Knight innately? I want to create a set of character classes that each have a status or ability unique to them, such as the Thief with his dual-wielding, the Paladin who covers weak allies, and possibly a Ghost with the "blink" status. Basically, I want to give characters these bonuses without the pesky problem of equipping relics or changing their equipment to have these bonuses. I figure, since Shadow naturally has the Dog Block status, that there's a way to give other character other statuses. Any way it can be done?