Irish goalkeeper Rene signed initially for Watford in 2010 from Walsall, mainly playing understudy to Scott Loach. He joined Plymouth Argyle in 2012, but returned to Watford two years later as back-up to Heurelho Gomes and Jonathan Bond, and stayed until the summer of 2017.
Academy graduate Marvin established himself in 2010-11, partnering Danny Graham in a young Watford team under Malky Mackay. His form persuaded Bolton Wanderers to pay £3m for his services on transfer deadline day in January 2012.
Striker Nathan signed in a then club record deal worth £3.25 million from WBA as manager Aidy Boothroyd looked to return to the Premier League at the first attempt. However it turned into a struggle for both player and team.
American defender Jay DeMerit spent six seasons at Watford from 2004 to 2010 after impressing in a preseason friendly with Northwood. He became club captain and played for the USA at the 2010 World Cup.