CREATE TABLE table_203_438 (id DECIMAL, "year" DECIMAL, "title" TEXT, "role" TEXT, "notes" TEXT)

what role did damon play most throughout his career ?
SELECT "role" FROM table_203_438 GROUP BY "role" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "role" FROM "table_203_438" GROUP BY "role" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1