Belgian brothers Kim and Ronny Huybrechts (pictured) are the darts manufacturer’s latest big name signings.
The four-year deal will see Kim join in Unicorn’s Maestro category, with Ronny as a Contender.
The pair famously came close to winning the World Cup of Darts last year, but were edged out in the final by England.
“This is a real honour for me and it has come at the perfect time, as I try to take my game to the next level,” Kim says.
“To be able to work with Unicorn and develop my darts is a huge boost and I will deliver the results over the next four years.”
“Finally I am playing and winning at the highest level and now I am part of Team Unicorn I have to pinch myself,” 48-year-old Ronny says.
Both have reached the semi-finals of the European championship in the last two years – Kim in 2012 and Ronny last year, after he had beaten Phil Taylor on the way.
Kim is on the verge of heading back into the top 16 in the world, while Ronny is targeting a place in the top 32 by the end of 2014.