CREATE TABLE table_204_903 (id NUMBER, "title" CLOB, "character" CLOB, "broadcaster" CLOB, "episodes" NUMBER, "date" NUMBER)

what was the previous role this actress played before playing cynthia in plebs ?
SELECT "character" FROM table_204_903 WHERE id = (SELECT id FROM table_204_903 WHERE "character" = 'cynthia') - 1
SELECT "character" FROM "table_204_903" WHERE "id" = (SELECT "id" FROM "table_204_903" WHERE "character" = 'cynthia') - 1