Iro was born on 26 November 1984 in Liverpool, England. His parents, Paul and Rose, both immigrated from Nigeria, eventually settling in the Toxteth area of Liverpool. He played youth football for Kingsley United. He attended St. Edwards, where he competed on the school's soccer, rugby, and track teams. He trialed with Everton, but ultimately proved unsuccessful. At the age of 17, Iro founded and operated a local grocery with a $1,000 initial loan from his mother, Rose. He ran the store until he was 19 years old, doing brisk business, until an attempted robbery resulted in Iro getting shot in the thigh. Iro had a relative run the business while he bounced between jobs and unemployment, eventually connecting with the University of California, Santa Barbara for an athletic scholarship. . Iro was a student-athlete for the UC Santa Barbara Gauchos men's soccer team and started as a freshman as the team went to the championship match of the 2004 NCAA Division I Men's Soccer Championship. Iro and UCSB were victorious in the 2006NCAA Division I Men's Soccer Championship just two years later with Iro being named the College Cup's Most Outstanding Player. For his career, Iro made 86 appearances, all starts, for the Gauchos and added 10 goals and 4 assists. He was a four-time All-Big West Conference First Team selection and was named as back-to-back-to-back Big West Defensive Player Of The Year.
Professional playing career
Columbus Crew
Despite being thought of as the possible top pick, Iro was drafted sixth overall in the 2008 MLS SuperDraft by Columbus Crew after coach Sigi Schmid was convinced Iro would remain in the United States to play. Iro made his professional debut on 28 March 2008, coming on as an 89th-minute substitute in the Crew's first game of the 2008 Major League Soccer season against Toronto FC. He would score his first MLS goal on 6 September 2008 against New England Revolution, heading in a Guillermo Barros Schelotto free kick. Iro and the Crew would win both the 2008 Supporters' Shield and MLS Cup 2008. In the 2009 Major League Soccer season, Iro and the crew again dominated the competition, resulting in their second consecutive Supporters' Shield. As a result of their accomplishments from the previous year, Iro also saw his first continental action in the 2009–10 CONCACAF Champions League. Iro began to take more of a leadership role in the Crew's 2010 Major League Soccer season and 2011 Major League Soccer season, which saw the club compete in the 2009–10 CONCACAF Champions League with Iro wearing the captain's armband on occasion. During his time with the club, Iro made 58 league appearances and scored five goals, but had grown disgruntled during the 2011 preseason and his contract was expiring at the conclusion of the season.
Toronto FC
With Iro's inexplicably falling out of favor in addition to his looming contract situation, Columbus Crew traded him along with teammate Léandre Griffit in July 2011 to Toronto FC for Tony Tchani. He made his debut on 20 July 2011 against FC Dallas. He would appear for Toronto in 13 league games in addition to work in the 2011–12 CONCACAF Champions League. At the end of the season, Iro and Toronto could not agree on a new contract and he left the club.
England
Following his departure from Toronto, Iro returned to England to trial with Nottingham Forest. The trial was unsuccessful, but Iro later signed with Football League One side Stevenage F.C. in September 2012. The move meant Iro would be playing under Gary Smith, a former Major League Soccer manager for Colorado Rapids, who he had known during his time playing in the United States. In November 2012, having failed to make a first-team appearances for Stevenage, Iro joined Football League Two side Barnet F.C. on loan until January 2013. The loan at Barnet was extended until 9 February. Iro made 9 league appearances for Barnet, scoring once, before returning to Stevenage. Iro returned to Stevenage in February 2013, but did appear in any first team games for the club. He made no senior appearances for the club.
Personal life
Following his professional soccer career, Iro worked in operations for Uber in Santa Barbara, California. He also trained youth soccer players in the local area and ran Next Step Academy, which placed a focus on academics.