He looked at her picture, she had been the most beautiful flower he had ever seen. It had been love at first sight, well at least for him. She had told him, that she could not care for him, the way she did for her children. So of course he had spent a few years trying to figure out how she had become what she was, how she had undergone her transformation. Finally, after his 4th year a stranger came to him, asking him if he wanted to be awakened, to the world, to nature. This was his chance, he accepted immediately. When the liquid entered his throat he had only a second to wonder if this was a bad idea, before he became unconscious. He remembered waking up in the hospital, he remembered the new voices in his head. He had done it. He was one with nature and he was finally able to get close to her. Get close to his one true love, Poison Ivy.
That was a long time ago. Since then he'd become a pretty powerful Eco-terrorist in his own right, always overshadowed by Ivy, never caring if he was in her shadow, only trying to please her. She had been hesitant at first. However, she had started taking a liking to him, she'd even given him his new name. Killer Thorn. He'd liked it, partially because it was a cool name, but mostly because she had given it to him. He'd been there for the asylum breakdown, he'd even been there for that city experiment of Strange's. Always in the shadows, helping Ivy with what she needed. This whole fiasco with the knight though, that had been the one time he wasn't there. He'd been in South America, creating a growing ecosystem for the new plant life he'd grown there. As soon as he heard, he'd began rushing back to Gotham. He' 'd gotten there too late.
When he arrived, he'd seen her spores, they had told him. She had sacrificed herself for the plants, for the city, for Batman. She'd never had feelings for him, at least not true feelings, but still. She was gone. He had been sad at first, hiding underground, lamenting. He had spent a week, two? Maybe a month down there, before he had come back. This time with vengeance's ripe fruits inside him. He was going to make Scarecrow pay. He had taken Thorn's only love, and now Thorn would take everything from him. If Scarecrow wanted to feel fear, well Thorn would just have to give him something to fear.