Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_11 (serial_number VARCHAR, function__figure_ VARCHAR)

### Question ###
What is the Serial number for the Space Security Trooper Function (figure)?

### Accurate SQL ###

SELECT serial_number FROM table_name_11 WHERE function__figure_ = "space security trooper"