"My character's name is Steven and I'm part of the new gay couple that moves in the neighborhood. Needless to say I am super excited," Hanlon told Playbill.com.
Colin Hanlon was seen on Broadway in Rent, Off-Broadway in I Love You Because and in the first North American tour of Wicked. He can also be seen in the web series "Submissions Only."
"Modern Family" airs Wednesday nights on ABC at 9 PM ET; check local listings.