Celty's back story is quite interesting. She is a supernatural being, a Dullahan. She lost her head under some mysterious circumstances and then traveled to Japan. In Ikebukuro, she makes a living as a courier. Her unique appearance, with her headless state and her black body, makes her stand out. She gets involved with different events and people in the city. For example, she has a complex relationship with the people around Shinra. She is constantly in a state of longing for her head and this drives many of her actions and interactions in the story.
The key element is her missing head. It's what sets her on her journey in Ikebukuro. Another is her role as a courier.
If it's Robin from a certain fairy tale, the back story could be completely different. Maybe Robin is a clever little character who lives in a forest, befriends the animals there, and has adventures defending the forest from some kind of threat. But without more context, it's hard to give a definite back story.
I'm not sure which 'Shura' you specifically refer to. There could be many characters named Shura in different stories, games or other works. If it's from a particular piece like a certain anime or game, more context would be needed.
Jinx's back story is one of a troubled upbringing. She hails from Zaun, a place full of strife. As a child, she might have witnessed a great deal of violence and inequality. These experiences, combined with her own unstable psyche, led her to embrace a life of anarchy. She started using her skills in creating explosives and gadgets not for good but for causing disorder, becoming a feared figure in Zaun.
Well, Itachi grew up in a time when the Uchiha clan was becoming more and more discontent with the Hidden Leaf Village. He was a very intelligent and skilled ninja even at a young age. When the situation with the clan reached a boiling point, the village leaders came to Itachi with a plan. He was torn between his loyalty to the clan and to the village. In the end, he chose to follow the village's orders. He killed most of the Uchiha clan members but spared Sasuke. He then joined the Akatsuki to keep an eye on them and also to push Sasuke to grow stronger through hatred for him.
Since I have no idea about Hanna, I can't really share her back story. But generally, a back story might include her place of origin. For example, if she was born in a small town, it could have influenced her values and personality. Also, any significant relationships she had in the past, like a close friendship or a mentorship, could be part of her back story. Maybe she had a life - changing event, such as an accident or a great opportunity that shaped her life. Without more context, it's hard to say exactly what her back story is.
Bane has a very tragic back story. He was born in a prison, which was a place full of violence and despair. He was a child who had to fight for survival from a very young age. The prison environment made him tough. He learned about the world through books in the prison. His exposure to the Venom drug was a crucial part of his development. It gave him the strength to break free from the prison and seek revenge on those he considered his enemies. His back story is what drives his actions against Batman and the Gotham city in general.
Well, Shigaraki's back story involves his family. He was Tenko Shimura at first. His family life was a mess. His father was a harsh man. And then that fateful day when his quirk emerged and he couldn't control it. He ended up losing his family in a horrible accident. This led to him being found by All For One, who then manipulated and groomed him to be what he is today, a powerful and dangerous villain in the My Hero Academia world.
Namor is a complex character. He is the mutant son of a human sea captain and an Atlantean princess. His dual heritage has made him a key figure between the surface world and Atlantis. He has often been in conflict with surface - dwellers due to their disrespect for the oceans and Atlantis.
The Kollector is a rather mysterious character. His back story might involve a lot of elements like his origin in a certain realm where resources are scarce. This led him to develop his skills of collecting various things, whether they be valuable artifacts or information. It could also be that he has some sort of family history that pushed him into this role of a collector.