Star Wars - Young Jedi Knights - Shadow AcademyKevin J. Anderson, Rebecca MoestaStar Wars: Young Jedi Knights, book 2

Characters in Star Wars - Young Jedi Knights - Shadow Academy

6 characters, main characters first.

Antagonists

Brakiss
Also in Jedi Under Siege

Supporting characters

Luke Skywalker
Also in Star Wars - Young Jedi Knights - Heirs of the Force, Lightsabers, Jedi Under Siege

Minor characters

Darth Vader
Emperor Palpatine
Also in Star Wars - Young Jedi Knights - Return to Ord Mantell