The term 'OZ Character' refers to characters from the classic children's novel The Wonderful Wizard of Oz by L. Frank Baum. The crossword solutions for this term are Scarecrow (9 letters), LION (4 letters), WITCH (5 letters), and Wicked WITCH (11 letters). The Scarecrow is a character who is made of straw and desires a brain, the LION is a cowardly character who desires courage, the WITCH is a character who is good-natured but mischievous, and the Wicked WITCH is the main antagonist of the story.