The Alien franchise's Xenomorphs are truly terrifying, but there are other sci-fi creatures that are more powerful.

When it first premiered in 2005, Ben 10 became all the rage almost immediately thanks to its unique lore. The idea of having a hero who can transform into different aliens was a hit with the viewers.

The increasing scope of the MCU has seen some truly powerful alien beings introduced into the franchise’s stories. Some are naturally powerful, while others were shown to be enhanced by artifacts or ...