One popular one is 'Hercules' which has been animated in different versions. It tells the story of the strong hero Hercules and his adventures. Another is 'Percy Jackson: The Lightning Thief' which has also been made into an animated story, following Percy's discovery of his demigod status and his quests in the world of Greek mythology.
One main theme is heroism. Many of the characters in these stories, like Hercules, are heroes who have to overcome great challenges. They often face powerful monsters and difficult situations to prove themselves.
One of the most popular is 'Percy Jackson & the Olympians'. It has an animated version that brings the story of Percy, a demigod, to life. The story is full of adventures as Percy discovers his powers and battles against various mythological creatures.
You can try some streaming platforms like Netflix or Amazon Prime Video. They often have a selection of animated shows based on Greek mythology. Another option is to check YouTube, where there might be independent animators or channels dedicated to such stories.
There are also some dedicated websites for animated content. Some of them might have a section for Greek mythology stories. You can search for such websites using search engines and explore the available content.
According to what I know about web novels, the longest series of anime is Naruto. This anime was started in 2007 and is still being published. It updated one episode a week and had already updated more than 1500 episodes. As a result, Naruto had been in series for more than 10 years and had become a very popular anime.
Another one is 'Hercules: The Animated Series'. It tells the story of Hercules, the son of Zeus, on his journey to become a true hero. It includes many elements from Greek myths like his battles with monsters and his relationship with the gods.
The longest animated series in the world was Dragon Ball. The anime was first released in 1996 and had been in series for more than 25 years. It was updated every week in manga magazines and on the Internet. Dragon Ball was a popular manga and animation that had many fans around the world. Its influence was not limited to Japan but also extended to Asia, Europe, and North America.
China's first animated series was Uproar in Heaven. It was released in 1965 and was a classic in the history of Chinese animation. The cartoon has a total of 72 episodes, each episode has a unique storyline and character design, showing the charm and style of the characters in Chinese mythology such as Sun Wukong. This cartoon was very popular around the world and became one of the treasures of Chinese culture.