He broke into the industry by working for Image Comics in the 90´s. Tan then moved on to Marvel where he became the artist for the series Uncanny X-Men. He became the regular artist for the New Avengers Vol 1, then did a few numbers of Thor.
Later this year (2010) Billy will draw the Shadowland series for Marvel in which Daredevil stands in the spotlight.
Now he´s assigned to be the penciler of Uncanny X-Force # 9 and 10, to be released in May 2011.