Night of Masks by Andre Norton

In the aftermath of interplanetary war, a disfigured and dispossessed loner is given a chance at a new life'??but it comes at a steep cost Disfigured in the wars that destroyed his planet, Nik Kolherne lives a shadow existence in the sprawling refugee ghetto of the Dipple. He wears a mask to cover his scars and dreams about another country under an unfettered blue sky and a warm sun. But a chance encounter gives him the opportunity for a new face'??and a new life. All he has to do is impersonate a young boy'??s fantasy hero. So what if Nik is now allied with the Thieves'?? Guild, a subversive outlaw group that seeks their prey on loosely held frontier worlds? A kid all alone in the world could use an ally. His mission is to lure Vandy Naudhin i'??Akrama, the young son of a powerful warlord, from his high-security villa and deliver him to the Guild so they can access critical information locked in his brain. But when Nik and Vandy are shipped off to Dis, a burned-out wasteland of a planet, Nik realizes he'??s a pawn in a spiraling web of political intrigue and intergalactic evil that threatens both their lives.

This book is part of the "Dipple" series.
Here are some other books from this series: