8. Taoqi (Naughty)

Taoqi (Naughty) is one of the main characters in "3000 Whys of Blue Cat," a large-scale Chinese animated series with an emphasis on science. The green mouse, together with the Blue Cat and other friends, explores different parts of the world. 

In each episode, they encounter various problems and ask science-related questions such as "How was Earth formed?" and "What are smartphones?" The questions are answered by short informational videos during the story.

The animated series, which has more than 3,000 episodes, was broadcast from 1999 to 2001. It remains one of the longest running children's cartoon series in the world.