The main characters are usually the troll and the traveler who wants to cross the bridge.
In the 'troll under a bridge story', the key characters are the troll, of course. It's the one causing trouble and blocking the bridge. And then there's the person or creature who needs to cross the bridge. This could be a hero on a quest, a simple villager going about their business, or even an animal in some versions. There might also be other characters in some tellings, like a wizard who gives advice to the traveler on how to deal with the troll, but the two main ones are the troll and the bridge crosser.
Typically, there is the troll, which is the main antagonist. It lives under the bridge and tries to stop people from crossing. And then there are the travelers or the heroes who want to cross the bridge. They could be villagers, knights, or just ordinary people on a journey.
Typically, there are the kids or travelers who want to cross the bridge. They are the ones who face the challenge of the troll. And of course, the troll is a main character. It is the one that guards the bridge and creates the conflict in the story.
Typical characters are the travelers or villagers who need to cross the bridge.
The moral could be about not being greedy. In the story, the troll often tries to take something from those who want to cross the bridge. It shows that excessive greed can lead to negative consequences for the greedy party.
I don't know the main characters in 'troll bridge graphic novel' since I haven't had the chance to read it.
The key elements are the troll, the bridge, and the characters who try to cross the bridge. The troll usually guards the bridge and causes trouble for those who want to pass.
The 'troll under a bridge story' is often about a troll that lives under a bridge. Usually, the troll tries to stop people or creatures from crossing the bridge by setting up some sort of challenge or threat.
The moral could be about not being greedy. The troll in the story often demands something from those who want to cross the bridge. If people are too greedy or try to cheat the troll, they might face consequences. For example, if the travelers lie to the troll to cross the bridge without paying the 'toll' (whatever the troll demands), the troll might get angry and cause trouble for them. It also shows that sometimes, being honest and finding a fair solution can lead to a better outcome for everyone involved.
It could be that people who cross the bridge are always noisy or disrespectful of its space. So it becomes grumpy over time as a form of self - protection.
I don't know the specific 'under the bridge the true story', so I can't tell who the main characters are.