CREATE TABLE table_16564 ("Character" CLOB, "Portrayed by" CLOB, "Relationship" CLOB, "First appearance" CLOB, "Last appearance" CLOB)

Which characters had their first experience in the episode 'consequences'?
SELECT "Character" FROM table_16564 WHERE "First appearance" = 'Consequences'
SELECT "Character" FROM "table_16564" WHERE "First appearance" = 'Consequences'