Mark Fonseca Rendeiro used to play french horn in the New Jersey third-wave ska band One Cool Guy, and after their disbandment moved to France to study. In 2000/2001 Tomas Kalnoky invited him to again perform french horn, this time for BOTAR's A Call to Arms.

At the start of 2002 he was living in Lisbon, Portugal, but has now moved to Amsterdam, Netherlands, where he runs a political activist blog named Bicyclemark's Communique at bicyclemark.org. He also publishes podcasts, and on the 29th May 2005 posted one which discussed the third-wave ska scene of NJ/NY in the late nineties, featuring interviews with Mike Struening of OCG and Tomas Kalnoky.