It is an interesting thing to create characters who have super powers or at least super abilities. Their relationships are grounded in patterns the reader can identify as being logical and understandable, given the character's history and background.
For a story to be believed, the protagonist will have a quest to meet, a duty to honor, and at least one moment of revelation to learn their true purpose. A story gives the reader the opportunity to walk in another's shoes for while and try on a different life and experiences. Universal truths are those concepts that we understand to deepen the story experience.
Various memes we identify as Universal truths:
--The hero protagonist who can plan; even better when they can plan on short notice.
--A determined antagonist, especially one with minor character flaws as well as evil intent.
--A protagonist that doesn't quit, no matter what.
--Love conquers all or good vanquishes a bad intent.
--The heroic action/heroine response.
--Being socially shunned strengthens a character's best qualities.
--First love is bittersweet.
--The more the protagonist understands their own weakness, the stronger or stranger the challenge they face.
--Betrayal or loss of trust is a survivable lesson.
--The crisis of faith or the crisis of belief in yourself can be overcome.
--The personal revelations of one's moving from childhood to adulthood, and adulthood to elderly are pivotal.
--Facing mortality is first the great fear, then the great adventure.
--A major character who's quickly written off will quickly return.
We see in our everyday life mere mortals who fall short of these universal truths, yet this shouldn't make us sad, for we want to see these qualities in those we love who are the personal heroes of our lives. Those we love the most will have these best qualities.
An universal truth in story may not be factual to real life experience, be we want to believe it so.