He played a total of 12 regular season games (seven for Phoenix and five for Ottawa) scoring one assist and collecting 34 penalty minutes.
Gagnon was undrafted and began his professional career in the ECHL with the Dayton Bombers and scored 61 points in 136 games.
This was followed by a spell in the International Hockey League with the Fort Wayne Komets where he scored 7 goals and 14 points in 72 games with 457 penalty minutes.
He finished his career in Germany, playing two seasons in the 2nd Bundesliga for the Lausitzer Füchse.
This biographical article relating to a Canadian ice hockey defenceman born in the 1970s is a stub.