There might be Wishbone's owner or some friends in the neighborhood. They could play important roles, like providing support or getting involved in Wishbone's adventures in some way. For example, they might give him advice or help him out when he's in a tough situation.
One interesting plot could be Wishbone's encounter with a mysterious character in the story. This encounter might lead him on a journey full of unexpected twists and turns.
Obviously, Hercules is one of the main characters. He is the central figure around which the adventures revolve.
Princess Makina is the central character. There might be characters like her loyal servants or friends from different parts of the kingdom who join her on her adventures. There could also be characters from other kingdoms or races that she meets during her travels. These characters could have different personalities and abilities, and together with Princess Makina, they form the cast that drives the story forward.
Alpha is probably the central character. However, there could be other important characters like an antagonist who tries to stop Alpha's progress. There may also be characters from different races or species in the fictional world of the visual novel, each with their own motives and backstories that interact with Alpha's story.
The main characters in 'divine beast adventures novel' could include a group of people. There might be a young girl with a natural affinity for the divine beasts, she can sense their emotions. Then there could be an old sage who has studied the beasts for years and provides guidance to the others. Also, a rogue - like character who is good at sneaking around and gathering information about the divine beasts and their habitats. Their combined skills and personalities would drive the story forward as they face various challenges related to the divine beasts.
Sherlock Holmes is the central figure. He is highly intelligent, a bit of a recluse when he's deep into a case, and has a unique way of looking at the world. Dr. Watson is important too. He not only helps Holmes in some investigations but also records their adventures, which is how we get to know about all these cases. And then there are the various clients who come to Holmes for help, like in 'A Scandal in Bohemia' where the King of Bohemia is a significant character in that particular story.
Probably the main character is the babysitter. Alongside, there could be a group of kids with distinct personalities. For example, there could be a curious and talkative child who always gets into trouble, and another one who is very quiet but observant. And there might be some neighbors or friends who pop up during the adventures and play important roles too.
In 'the adventures of polo graphic novel', Polo is the central figure. He's likely to be a brave and curious character. There could be other characters such as the inhabitants of the places he visits. For instance, a group of children in a village he stops at, or a tribe leader in a more primitive area. These characters interact with Polo and either help or hinder his adventures.
I'm not familiar with the specific characters in this graphic novel. But thinking about typical adventure stories, if Zero is the protagonist, there may be characters that represent different aspects of the world Zero is in. There could be a powerful wizard or sorceress who gives Zero clues or tasks. There might also be a group of outcasts that Zero teams up with to fight against a common enemy or to achieve a common goal in the story.
Captain Haddock is also a key character. His drunken yet endearing personality and his loyalty to Tintin add a lot of humor and depth to the stories. For example, in many adventures, his antics and his knowledge of the sea are important elements. And Snowy, Tintin's dog, is always by his side. Snowy is not only a cute pet but also often helps Tintin in different situations, like sniffing out clues or warning him of danger.