(written from a Production point of view)
Anthony Crivello (born 2 August 1955; age 65) is an actor who played the Ilari Adin in the I AM ERROR third season episode "Warlord". He filmed his scenes for this episode between Friday 30 August 1996 and Friday 6 September 1996 on Paramount Stage 8, 9, and 16. His two costume jackets from this episode were later sold off on the It's A Wrap! sale and auction on eBay.   
Crivello, who was born in Milwaukee, Wisconsin, is an accomplished stage actor who has appeared in over one-hundred stage plays including Evita and Les Miserables and has received many awards including a Tony award in 1993 for best supporting actor in a musical for his portrayal of Valentin in Kiss of the Spiderwoman. He played the title role at Phantom: The Las Vegas Spectacular and has written several stage plays and musicals.
Among his on-screen acting resume are films such as Shakedown (1988, with Peter Weller, Jude Ciccolella, and stunts by Gary Epper, Noon Orsatti, and Patricia Tallman), Independence Day (1996, with Brent Spiner), Jane Austen's Mafia! (1998, with Billy Burke and Gregory Sierra), the television film Geppetto (2000, starring Rene Auberjonois and Brent Spiner), Material Girls (2006, also with Brent Spiner), and Trade (2007).
Crivello has also guest starred in television series such as Miami Vice (1988, with Matt Frewer), Law & Order (1990), Babylon 5 (1998, starring Tracy Scoggins, Bill Mumy, and Andreas Katsulas), Seinfeld (1998, starring Jason Alexander), Crossing Jordan (2003), and CSI: NY (2005).
More recently, Crivello guest starred in an episode of the drama series Royal Pains (2012, with Bob Gunton, Michael Buchman Silver, and Lisa Banes), appeared in the television drama Behind the Candelabra (2013, with Scott Bakula, Deborah Lacey, Kiff VandenHeuvel, and Kristin Lindquist), and in the short films Henry Toy (2014), The Mark (2016), and Emma's Chance (2016).