Characters who were part of the rebel alliance: Princess Leia, Luke Skywalker and Han Solo, are printed with the Alliance Starbird.
Darth Vader, the Emperor and the Stormtrooper are printed with the Imperial Crest.
Boba Fett is printed with a Manalorian Crest. This is the same emblem that appears on the upper left corner of the character's chest armor.
And finally, Yoda and Obi-Wan Kenobi are printed with the Jedi Order logo.