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

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What is the word or phrase?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Why do we preferably have round manhole covers and not square ones?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

How many letters are in the alphabet?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?