This is just my guess, but maybe it's because the dictators use their words to climb up and become one?
For example, Adolf Hitler was in the congress for a long time before he became a dictator. He talked and gave lots of speeches that the Germans (At the time) thought were good, so they slowly trusted him and unfortunately let him become dictator.
I wouldn't use this as an answer to a quiz or test, though.
A lion represents strength, power, and royalty. Many rulers over many centuries have used lions as an animal of pride. Babylon was an especially good kingdom that used them and even used them in executions to make the people fear them. A lion is a predator and so it makes the kingdom seem strong willed and dangerous as well as somehow holy. England used the lion as a symbol of Christ and just like the Greeks put Medusas' head on their soldiers' shields, England put the lion on the coat of arms as a symbol of protection, might, and yet again, royalty and a symbol of fear to a warring country.
Superman plays the archetype of hero, in most cases, as he helps save the world from evil.
However, in "Superman vs. Batman" (i believe), Superman plays the archetype villian, as he is portrayed as one who fallen out of the law.
hope this helps
