Well, one key element could be the journey itself. How did the character or person get to heaven? Was it through a near - death experience or some other means. Another element might be the description of heaven. Is it a place full of light, with angels? Also, the return journey and what the person brings back from heaven, like a new - found wisdom or purpose.
One key element is the role of religious dogma. It shapes the actions and decisions of the characters.
One key element is the wealthy setting. The 90210 zip code represents luxury. Another is the high - school aspect. The characters' experiences in school, like cliques and popularity contests. Also, relationships play a big part. There were romances and break - ups among the characters.
One key element is the nuclear apocalypse that destroyed Earth. Another is the Ark, the space station where the survivors were living. And of course, the 100 delinquents being sent to Earth.
One key element is the different races. Their relationships and power dynamics play a big role. Another is the political situation, with various kingdoms and factions. Magic is also a key, as it affects battles and the balance of power.
One key element is its evolution from Gastly and Haunter. Another is its connection to shadows and darkness. Also, its mischievous nature is important.
The key elements are the Smurfs themselves, their forest village, and Gargamel. The Smurfs' unique characteristics and their village setting are important parts of the back story, and Gargamel as the main villain.
If it's Guts from 'Berserk', one key element is his origin from a hanged corpse, which sets him apart and makes his existence somewhat of an outcast from the start. Another is his time as a mercenary, where he learned combat skills and survival tactics in a harsh world.
One key element is his desire for power. Bowser wants to rule the Mushroom Kingdom. Another is his rivalry with Mario. Their battles are a big part of his story. Also, his relationship with Princess Peach, as he constantly tries to kidnap her. His army of minions is also an important part of his back story as they help him in his evil plans.
One key element is Tony Soprano's dual life. He's a mobster but also a family man. Another is the power struggles within the mob. There are different factions vying for control. Family loyalty, or the lack of it in some cases, is also a big part of it.