Can you briefly explain Ray Donovan's Collen back story?

I'm not entirely sure who 'Collen' is in the context of Ray Donovan. There could be a misspelling perhaps. If it's about Ray Donovan in general, he's a fixer who has a complex family background and gets involved in all sorts of dirty business in Hollywood to protect his clients.

Colleen's back story in Ray Donovan involves a complex web of her past relationships and experiences that shape her present.

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.

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

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.

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.

Sure. Kirishima wanted to be manly. He used to have doubts about himself but was inspired by heroic figures. He trained hard to get stronger.

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.

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.