A South African born New Yorker to a Greek father and a Scottish-Irish and English-Lithuanian mother, he speaks Afrikaans and Greek fluently although American English is his first language.  His gravitas, eclectic choices, & three decades of award winning individual & ensemble performances opposite many iconic actors have made him a steadily in demand product of highly acclaimed independent & international theatrically released films. He can presently be seen starring opposite Academy Award Nominee Matt Dillon & Jim Caviezel as Portuguese coffee plantation Mayor Alvares in the Hawaiian period drama Running for Grace (2018) on Netflix. Running For Grace recently won numerous congressional awards for diversity, presented by presidential nominee & Hawaiian congresswoman Tulsi Gabbard. He will next be seen starring opposite Academy Award Nominee Frank Langella & Bobby Cannavale in the comedy Lapham Rising produced by Academy Award Nominee Kerry Orent based on the best selling novel of the same name. He also portrays an international journalist opposite Jim Caviezel & Claudia Karvan in the soon to be released Middle-Eastern political thriller 'Infidel' by critically acclaimed director, Cyrus Nowrasteh. Recent film credits include starring opposite Michael BeachRaymond J. Barry, & George Blagden as a rogue federal agent in the romantic comedy No Postage Necessary (2017) on Amazon, the first film in history to be available for purchase through cryptocurrency. Further, as a South African drug and arms dealer opposite Alex Russell & Willa Holland in the neo-noir Blood in the Water (2016) on Amazon Prime. Also starring as a radio station programmer opposite François Arnaud & love interest to Reiko Aylesworth in Vertical Entertainment's Times Square thriller Rapid Eye Movement (2019) on iTunes & Amazon.

Additionally a staple of well received recurring & guest star roles including in NBC's My Own Worst Enemy: Conspiracy Theory (2008), in Mark Duplass & Jay Duplass' comedic series Togetherness (2015) for HBO, portraying pioneer David Sarnoff in the Nat-Geo mini-series American Genius (2015), twice for J.J. Abrams' in Undercovers (2010) directly opposite Gugu Mbatha-Raw, and directly opposite Jim Caviezel in Person of Interest (2011). Also starring in NCIS (2003), additionally directly opposite Jimmi Simpson in Breakout Kings (2011), opposite Academy Award Nominee Marianne Jean-Baptiste and Ivana Milicevic in Without a Trace (2002), opposite Annabella Sciorra and Chris Noth in Law & Order: Criminal Intent (2001), opposite Dylan Sprouse and Cole Sprouse in The Suite Life on Deck (2008), opposite Tony Hale in Arrested Development (2003), and also in All My Children (1970), Guiding Light (1952) & recurring as Dino in Tyler Perry's The Haves and the Have Nots (2013) for Own Network.

Further film credits include roles as an altruistic scientist opposite César Award Winning Isaach De Bankolé & Juliet Landau in the South African-Dutch-Equatorial Guinean drama Where the Road Runs Out (2014), winner of the Black Reel Award for Outstanding World Cinema. Additionally portrayed the head of a sex trafficking ring in Gravitas Venture's Apartment 407 (2018), winner of several major awards at Raindance & San Diego film festivals. His performance as Hunter Kimbrough in Peter Greenaway's Golden Bear nominated biographical romantic comedy-drama and international co production Eisenstein in Guanajuato (2015) was noted as memorable by Film Journal's David Noh, as he & the lead cast were nominated for a Teddy Award at Berlin film festival. Was recognized globally by critics for his role as a ruthless policeman in the South African film A Million Colours (2011). Praised for his recurring portrayal as Joe 'The Boss' Masseria in AMC's The Making of the Mob (2015) with Previously TV's Sarah Bunting stating 'Stelio is reminiscent of James Gandolfini, I liked a certain gravitas-emblance to the Fini that I saw in Stelio'. His portrayal was also hailed by The Examiner's Diane Zoller Ciatto. Entertainment Tonight's Nischelle Turner applauded his understatedly powerful turn as Howard Boston opposite Brian White in TV One's Media (2017). Starred as a crooked local politician opposite Academy Award Nominee Sally Kirkland and Steven Bauer in the Hampton's set drama Awakened (2013). Received outstanding reviews as a tormented hit-man with a conscience in Pronoia & as a rebellious Jewish prisoner in Once We Were Slaves; winning Best Actor at both the SOFIE Awards and the historic American Movie Awards where former winners include Academy Award Winner Meryl Streep, Academy Award Winner Warren Beatty, Academy Award Winner Clint Eastwood, and Academy Award Winner Steven Spielberg . Stelio's ability to transition from rough around the edges, blue collar criminals to highly articulate, ruthless, white collar professionals to charmingly, quirky, vulnerable & broken characters resulted in Screen Africa magazine labelling him 'The Chameleon'.

After minor speaking roles opposite Academy Award Winner Russell Crowe in Academy Award Winner Ron Howard's A Beautiful Mind (2001) & David Chase's The Sopranos (1999) as Gaetano; his breakthrough lead role came in Law & Order: Special Victims Unit (1999) directed by Academy Award Winner Juan José Campanella. Starring directly opposite Mariska Hargitay, Chris Meloni, Academy Award Nominee Bradley Cooper and Academy Award Nominee Angela Lansbury, as the chilling yet engaging fundamentalist Milan Zergin. Also, a coveted recurring role on Ugly Betty (2006) produced by Academy Award Nominee Salma Hayek and starring directly opposite Vanessa Williams and Rebecca Romijn, becoming South Africa's first male SAG Award Nominee (Ensemble Comedy Performance). Followed by a supporting role in the studio film My Super Ex-Girlfriend (2006) opposite Eddie Izzard, Luke Wilson, & Academy Award Nominee Uma Thurman directed by Academy Award Nominee Ivan Reitman for Twentieth Century Fox and an ensemble lead in Sony's Starship Troopers 3: Marauder (2008) produced by Academy Award Nominee David Lancaster. His two decades of New York stage credits include favorable reviews from the NY Times. A student of Robert X. Modica, Deborah Kampmeier, William Alderson, Don Bloomfield, & Diane Venora, his training is rooted in theater & improvisation but influenced by the eras of French New Wave & Italian Neo-Realism. Was acknowledged by Academy Award Winner Al Pacino, Academy Award Winner F. Murray Abraham & several NY theater critics for his lead performance in Mortal Coils, directed by the Actor's Studio Ed Setrakian at the Mint Theater.

Frequently volunteers his time simultaneously performing & producing Sarah Tuft's "110 Stories" to raise money for several charities. Working in several roles on stage directly opposite the following fellow cast: Edie Falco, Academy Award Nominee Robert Forster, James Gandolfini, Cynthia Nixon, Academy Award Nominee John Hawkes, Academy Award Nominee Samuel L. Jackson, Academy Award Winner Melissa LeoJeremy Piven, Academy Award Winner Mira Sorvino, Academy Award Winner Susan Sarandon, Tamara Tunie, Academy Award Nominee Kathleen Turner, John Turturro, & Diane Venora.

A popular voice over artist, he voices the character of Ajax in Call of Duty: Black Ops 4 (2018). Was inducted into the Alpha Psi Omega honors society for his achievement in American collegiate theater. Served on the actor's panel of the 2014 San Diego film festival with Josh Duhamel, Academy Award Nominee Tom Berenger & Dennis Haysbert, hosted by Variety & film critic Jeffrey Lyons. Is a board member of the River Street Theater Company; alongside Robert Carnegie, Academy Award Nominee Jeff Goldblum , Academy Award Nominee David Mamet, Academy Award Winner Jon Voight & president, William Alderson.

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Running For Grace