Lillis saw a skateboard for the first time in his life 1977 and knew that moment that he wanted to be a skateboarder. It took him however one complete year to convince his parents to buy him a skateboard. Finally, the summer of 1978, Lillis stepped on his very own skateboard. Why skateboarding attracted him he has no idea of, he just knew that it was something he had to do, something that was already a part of his life. These days he talks about the freedom, the creativity, the expression of one's self through skateboarding, integration of body and mind and pure and crazy fun. But back then in the late 1970's, it was simply his destiny. And still is.

Lillis also has an intense interest in acting and is part of a local theater group, Skokloster Teatersällskap, where he trains under the guidance of swedish actor and director Willy Tappert. Lillis has had the lead roles as Lars Hård in the play "Lars Hård" by Jan Fridegård and as Mascarille in "The Pretentious Young Ladies" by Molière and is now re-hearsing for the role as Jean in August Strindbergs "Fröken Julie".

His debut in front of the cameras was for the pilot of 1251 - Folkungarnas tid, where he is portraying the 1300th century Swedish king Knut den Långe.

Being a fan of Star Trek, Lillis is happy to have landed the role as the android Commander Andrew in the Norwegian fan based Star Trek movie Gatekeeper. Filming is scheduled for 2009.

Lillis is also a very creative web and graphic designer. He goes to great lengths to come up with the perfect balance between form, function and simplicity.