Can you briefly explain Grindelwald's back story?

Snoke was a major figure in the First Order. He had an interest in Kylo Ren and trained him. His own back story wasn't fully detailed, but he was a significant threat in the Star Wars story.

Sure. Rosalina was a girl who found a Luma and then journeyed through space, eventually becoming the caretaker of the Comet Observatory.

Casper's back story in brief is that he was once a human boy. After death, he turned into a ghost. However, he is different from other ghosts as he is friendly towards humans.

Kuromi is a Sanrio creation with a back story of being different. She's a bit of a troublemaker, and her story is centered around her non - conformist attitude compared to other Sanrio characters, especially in relation to My Melody.

Hodor was originally Wylis. When Bran was in a dangerous situation, he warged into Hodor's mind. This event somehow damaged Hodor's mind and left him only able to say 'Hodor'. It was a tragic event that changed Hodor's life completely.

Sure. Catwoman, Selina Kyle, often had a tough upbringing in Gotham. This led her to a life of stealing.

Sure. Selina Kyle is Catwoman. She grew up in hardship and turned to thieving. She's known for her cat - like skills and has a complex relationship with Batman.

The Terrifier is a horror icon. His back story has elements of him being a deranged and violent being. Not much is clear about his origin but he is known for his extreme acts of brutality.

Trump comes from a wealthy real - estate family. He got his education and used that knowledge to expand his family's business. Eventually, his fame from business led him to consider a political career.

Ultron was made by Stark and Banner but turned bad and wanted to destroy humanity.