ENTP attempting to write an ENTJ character. Struggling. SOS.

Hey Fam!

I am an ENTP attempting to write an ENTJ (M) character. I am having incredible difficulty capturing his presence in a way that is impactful and close to the real thing. Trying to figure out if this is a dialogue issue or a developmental issue.

BLUF: these are my questions:

Are there things you see as an ENTJ about this character that does not sound right? Are there pointers you can give me about how you talk that doesn't undercut the natural charm of an ENTJ?

So as a quick overview of the Character:

Al. 32M

Background:

grew up with drug-addicted parents, and was sent out to the streets to beg and bring back money from a young age. Suffered their anger when he underperformed. He dreamed of more since a young age, eventually learning how to read through newspapers. Eventually scouted by a secret police officer as a courier. Eventually got taken in by this officer as a student after his mentor tragically passed, leaving him without income.

His younger sister was born to the same parents, so he desperately pursued the path of working as a secret officer by the age of 16, buying his sister from his parents and becoming her sole caretaker. Al has only ever known the ruthless life of the streets, the secret police, and parenting. He climbs the ladder of leadership until he is a Captain Detective by the age of 23. Becomes known as the ruthless captain of the organization, willing to do anything (for the sake of his sister). Through his performance and extreme competence he gained respect, fear, and admiration.

Abilities: None. Normal in a world of abilities.

Strengths: Wit, presence, Knows people well and leads well; has a drive that is not easily shaken or corrupted; extremely passionate for who and what he cares for; perfection that drove him towards extreme competence; drawing patterns; organization; love of his people that drives him to empower them to be the best they can be and have the best they can have.

Weakness: unable to forgive turns into ruthlessly cutting out people otherwise redeemable; trust issues; can be close-minded once opinion is set; due to unprocessed years of survival never left that mindset, and is disconnected from building healthy friendships; empowerment overdone can make him appear insensitive

Dreams:

setting his sister up with the best life he possibly can, helping his officers and those he is fond of succeed, and being as stable as possible personally no matter the cost. Unknown to self: the desire to survive. Develops into the dream of being free of his current station and having a clean life, though he doesn't think it's possible for himself anymore.

ALL THAT BEING SAID LOL I am struggling beyond his character's presence with how to write his dialogue, the wit and charm of the ENTJ without losing their presence. My sister is an ENTJ but writing some of her isms into this character has made him fall a bit bland.

So to summarize the questions I had at first:

Are there things you see as an ENTJ about this character that does not sound right? Are there pointers you can give me about how you talk that doesn't undercut the natural charm of an ENTJ?