Sure, you could hate a guy who’s that talented, that charismatic, that transparently ambitious. But the people who have worked with Oscar Isaac don’t. On the contrary, they’re all sure he has it – that magical, can’t-be-taught thing that transforms an actor into a star.

Playwright Eduardo Machado, who put in a good word for Isaac at Juilliard, says “he does have that star quality that makes your eyes go to him. It’s great that someone with that talent still wants to train.”

“He has a star quality that’s rare in a young actor,” adds Joseph Adler, who directed him in Side Man and This Is Our Youth. “Without a doubt I expect to be hearing great things from him.”

‘I JUST LOVE CREATING’

Isaac, who also makes short films, can’t say exactly why he was attracted to acting. He just knows it makes him happier than anything, that it’s what he was meant to do. And he’s been doing it since he was a 4-year-old putting on plays in his family’s backyard with his sister Nicole.

“I just love creating, whether it’s music or films or a character on a stage. I love taking people for a ride,” he says. “In Side Man, every night I would love being that close to the audience. I felt like I was talking to 80 of my closest friends.

“I could feel what the audience was feeling.”

His powerful, mournful-yet-loving monologue near the end of the play, he said, “worked every night. I knew it would get them. I’d hear sniffles.

“But it had less to do with me than with the atmosphere [created by the playwright and director].”

You could understand if Isaac, surrounded as he is by praise and possibility, had an ego as burgeoning as his career. Instead, he channels the positive reinforcement into confidence about his work.

“He has such a charm and an ease onstage, but he’s very modest,” says New York-based actress Judith Delgado, who shared the stage with Isaac in Side Man. “He’s hungry. He’s got moxie. I was blown away by him.

“He saved me a couple of times. I went up [forgot a line] and that baby boy of mine came through. He’s a joy.”

FORGING HIS OWN PATH

The son of a Cuban-American father and a Guatemalan mother, Isaac was never a stellar student. But he found ways of turning routine assignments – like the Noah’s Ark story – into creative challenges.

His science reports were inevitably video documentaries underscored with punk music. He acted through middle and high school, though he had a falling out with his drama teacher at Santaluces Community High in Lantana over his misgivings about a character. When she refused to cast him in anything else, he got his English teacher to let him play the dentist in Little Shop of Horrors his senior year.

His skepticism about authority and love of playing the devil’s advocate have long made him resist doing things the usual way. His post-high school “training” consisted of one semester at Miami-Dade Community College’s South Campus (where he met his girlfriend, Maria Miranda), touring schools playing an abusive character in the Coconut Grove Playhouse’s Breaking the Cycle, and working as a transporter of bodies at Baptist Hospital, where he absorbed the drama of people in emotionally intense situations.

“It was the most magnificent dramatic institute I could’ve attended,” Isaac said. “I was able to observe the entire spectrum of human emotion, people under the most extreme duress. I was mesmerized watching the way people interacted with each other in such heightened situations.

“I learned everything about the human condition, and it was real and harsh and brutally honest.”

Yet even given his propensity for forging his own path, something nudged him another direction while he was in New York making his Off-Broadway debut in December. Walking by Juilliard one day, he impulsively went in to ask for an application. Though the application deadline had passed, Isaac persuaded Juilliard to accept his, noting in his application essay that most of the exceptional actors he admires had acquired “a brutally efficient technique” to enhance their talent by studying at places like Juilliard.

Though he won’t know whether he has been accepted until the end of this month, his audition last weekend went well, he says. He did monologues from Henry IV, Part I and Dancing at Lughnasa, adjusting his Shakespearean Hotspur to a more fiery temperature at the suggestion of Michael Kahn, head of Juilliard’s acting program – though not without arguing that Hotspur wouldn’t be speaking to the king that way.

Isaac, not surprisingly, loves a good debate.

Adler, GableStage’s artistic director and a man who is as liberal as Isaac once was conservative, savored the verbal jousting they did during rehearsals for Side Man.

“He knows exactly how to pull my chain,” Adler says with a laugh. “Intelligence is the cornerstone of all great actors, and he’s bright as hell.

“He has relentless ambition but with so much charm. He’s very hard to say no to. He has incredible raw talent and magnetism that is very rare in a young actor along with relentless energy, perseverance and ambition. I see his growth both onstage and off. He’s mature in both places.”

Part of his growth, of course, will necessarily involve dealing with the rejections that are part of any actor’s life. His career is still too new, his string of successes solid, so it’s anyone’s guess how failure will shape him. But director Michael John Garcés, who picked him for When It’s Cocktail Time in Cuba after Isaac flew to New York at his own expense to compete with a pool of seasoned Manhattan actors for the role, believes his character will see him through.

“Oscar is realistic, but he’s so willing to go the whole nine yards,” Garcés says. “He didn’t go out when he was in the show here. His focus earned the respect of the other actors, some of whom have been working in New York for 30 years.

“He hasn’t had a lot of blows yet, when the career knocks the wind out of you. But he has talent, determination and focus, and if he has perseverance – my intuition is that he does have it – he could achieve a lot.”

FAMILY TIES

His father and namesake, Baptist Hospital intensive-care physician Oscar Isaac Hernandez, couldn’t be more proud. (Isaac doesn’t use the family surname in order to avoid, in his words, being “put in that Hispanic actor box.”)

“I’m ecstatic that he’s probably going to be going to the most prestigious drama school in the United States,” he says. “School will help him focus his energies and give him discipline. He’s got the raw material and the drive.”

Isaac’s mother, Maria, divorced from his father since 1992, is a kidney-transplant recipient who acknowledges that she’ll miss her son if he moves to New York. But, she adds, she wants him “to live out his dreams. He amazes me every day. He calls me every day. I’m very proud of him.”

Even the other guys in The Blinking Underdogs are fans of Isaac’s acting, though it could take him away from South Florida just as the band appears to be, Isaac says, on the brink of signing a recording deal (it has already put out its own CD, The Last Word, with songs, lead vocals and even cover photography by Isaac.

“Oscar’s the leader of the band, a great musician who amazes me and motivates us,” says sax player Keith Cooper. “I’ve been to see every one of his plays. He’s a phenomenal actor.

“I completely buy into his role in every play. As close as I am to him, I forget it’s Oscar.”

His South Florida theater colleagues credit that to Isaac’s insatiable desire to learn and grow.

Gail Garrisan, who is directing him in Donnie and One of the Great Ones for Winter Shorts, observes, “It’s not often that you find a young actor who is willing to listen and who doesn’t think he knows everything. He loves the work.

“He really brought the young man in Side Man to life. When I saw it in New York, it seemed to be the father’s play. When I saw it here, I felt it was his [Isaac’s] play.”

Oye Rep’s John Rodaz, whom Isaac calls “the best director I’ve ever worked with,” gave the actor his first important job in Sleepwalkers at Area Stage. They met when Isaac came to see Area’s production of Oleanna and the actor, knowing Rodaz ran the theater, introduced himself.

“He has so much energy and such a sparkling personality,” Rodaz says. “He knows how to move in the world. He seems to take advantage of every situation in a good way; he’s not a cold, calculating person who’ll stab you in the back.

“[But] he wants it so badly. Everything he does, he’s the leader. When I was 21, I was taking naps.”

Rodaz coached Isaac on his Juilliard monologues and found the experience energizing.

“I got chills just watching him. That happens so rarely. I was so exhilarated when I came home that I just had to go out and run. You just know he’s got all the tools.”

Christine Dolen is The Herald’s theater critic.