CREATE TABLE table_72160 ("Character" TEXT, "Fate" TEXT, "Actor" TEXT, "First Episode" TEXT, "Final Episode" TEXT, "Duration" TEXT, "Final Episode Count" FLOAT)

what are all the actor where first episode is 'ambush
SELECT "Actor" FROM table_72160 WHERE "First Episode" = 'Ambush'
SELECT "Actor" FROM "table_72160" WHERE "First Episode" = 'Ambush'