A lot less than posting a topic asking strangers to psychoanalyze you based off of a chess opening does.
what does your opening choice say about your character?

This sounds fun at least. Pop psychology and projective psychology tends to be the only good psychology:
Petroff and Four Knights: Suggests a mature, pragmatic person.
Najdorf and King's Indian: Suggests a dynamic personality and ambition.
Latvian Gambit: Hopeful and immature.
King's Gambit: Stuck in the past and a hopeless romantic.
Danish Gambit: Short sighted and seeks temporary thrills at the expense of what's good for the long term.
Ruy Lopez and Queen's Gambit: An ambitious realist.
Englund Gambit: Masochistic, or could be a trickster who doesn't care about objective substance.
Reti, Queen's Indian, English, and other traditionally strongly positionally oriented openings: Intellectual.

My personality on the chessboard is more or less the polar opposite of my regular personality.
In chess, I'm a bold, aggressive, and tactical risk-taker who is not afraid to sacrifice almost all her pieces and attacks mercilessly.
In all other areas of my life, I'm extremely deliberate, phlegmatic, spartan, and stoic, preferring to avoid all kinds of unnecessary drama.
I play the Vienna Gambit, the Sicilian Dragon, and the Benoni Gambit; once in a while, I attempt the King's Gambit too.
However, I have a well-hidden fighting instinct that kicks in whenever there's any real danger. Perhaps I'm a thrill-seeker at heart who, deprived of adrenaline kicks in my daily life, takes it out on the board.
Open games: Both principled and strong in thought.
Gambits as White: Likes excitement. Enjoy's action movies, fireworks and loud noise. Hates to be defending, would rather shoot first. Will take short term pleasure at the cost of long term pain.
Gambits as black: High tolerance for risk, does not care about objectivity, possibly has a scrappy fighting personality.
Gambits as either color: Gambiteers likely hold heavier levels of credit card debt than players who dont gambit.
Reti: traditional and objective thought process. likes to save the best for last sometimes at the cost of passing up good current opportunities.
queens gambit: An almost perfect blend of practical and theoretical decision making. Likes to have sound structure. Still good at taking hold of the right moment.
Ruy lopez: Plays the stongest way every move, has faith in their own intelligence and correct decision making.

In chess, I'm a bold, aggressive, and tactical risk-taker who is not afraid to sacrifice almost all her pieces and attacks mercilessly.
In all other areas of my life, I'm extremely deliberate, phlegmatic, spartan, and stoic, preferring to avoid all kinds of unnecessary drama.
Some might say these are closer related than you think. By being aggressive and sacrificial, you remove the tension(drama) that can come from playing slowly and more positionally.
Now, tell me about your mother.

In chess, I'm a bold, aggressive, and tactical risk-taker who is not afraid to sacrifice almost all her pieces and attacks mercilessly.
In all other areas of my life, I'm extremely deliberate, phlegmatic, spartan, and stoic, preferring to avoid all kinds of unnecessary drama.
Some might say these are closer related than you think. By being aggressive and sacrificial, you remove the tension(drama) that can come from playing slowly and more positionally.
Now, tell me about your mother.
Ha! Could make sense … apart from the Freudian bit, possibly.

I don't really know about this kind of stuff, but I think a person who likes the ICBM probably is very extravagant and doesn't like swift, silent victories. They instead feel the need to make their opponent take the biggest L in their entire life. If they were an anime character they would be sort of like Tengen Uzui or Childe, IDK LOL
i like bishop gambit opening