Solve below rebus puzzle?

What is the next number in this series?

4,12,84,3612....

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

Can you identify the famous TV character from the rebus below?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

John was drowned by he was not wet. How?