Answer:
I'm a ruler with 12 agents. Half of them work in the darkness. Who am I?
I come in different colors and shapes. Some parts of me are curvy some are straight. You can put me anywhere you like but there is only one right place for me.
I sit high glowing and watch the world go by. Without me everything would seem dull and dangerous. What am I?
I spend the day at the window go to the table for meals and hide at night.
What has four wheels and flies?
If I say "everything I tell you is a lie", am I telling you the truth or a lie?