Peabody is neither strictly science fiction nor a true story. It's a fictional tale that might incorporate elements of both genres, but doesn't neatly fit into either category.
Ada and Helena are likely characters from a particular fictional universe, perhaps from a game or a book series that has a fan base creating fanfiction about them.
The cartoon featuring Mr. Peabody is a fun and educational adventure. It showcases Mr. Peabody's intelligence and his various time-traveling escapades with his young friend.
One great Mr Peabody and Sherman fanfiction is 'The Time - Traveling Adventures Continued'. It really captures the essence of their relationship and the fun of time - traveling. It has exciting plots where they visit different historical periods and get into all sorts of comical and educational situations.
One popular theme is the exploration of different historical events. Since they can time - travel in the original series, fanfiction often takes them to various historical periods like ancient Rome or the Renaissance. Writers like to show how Mr Peabody and Sherman interact with the historical figures and how they might change or influence the events in some small ways.