It took quite a few days for him to feel whole enough to resurface from his seed. He still couldn't believe it. Ivy was gone. Yes she had left behind all of her children, the plants around Gotham that had mutated under her touch, but she was gone. He had loved her more than anything. More than the plants, more than the earth. She was the one he had done everything for. Yes, he had loved the earth when he was human, he had been an avid fighter of the forces of big business that had been destroying the planet for quite some time. Then she had appeared in all her beauty, all her furious glory, and he would have been lying to say that she didn't enthrall him from the very first moment he saw her on the news. He had done everything to get close to her, and soon she had figured she didn't need to enslave him with her spores. He would listen to anything she told him to do regardless the consequence. At first she had just taken advantage of him. Then it had grown into more, she had a respect for him, but he had wanted more. She told him it was impossible. He was a man, and that made him susceptible to her toxins. So he had departed to find a way to change that. Somehow he had found the original formula that had changed Ivy. The man who had given it to him was strange, but he had accepted nonetheless. Anything to get closer to Ivy. They had gotten closer since his transformation. They had never gotten to the point Thorn wanted, but he had been happy. Every time he made her smile, his entire world lit up, and he had grown to love being this close to nature. Then he had gone to South America to protect the Rainforest. He had been scaring off the last of the workers sent by Luthor's company when he first heard the news. Arkham was under attack, and Ivy was trapped in the middle of it. He had rushed back, leaving the plants to attend to the last minor issues the workers were causing. He had faith in them, he needed to, Ivy needed him. He had arrived to see the city engulfed in a strange toxic cloud. He recognized instantly it wasn't Ivy's doing. He knew her mark. He tried going inside, but was kept back by the cloud. After many attempts he began to notice it fading. He rushed inside, hoping, praying that Ivy was ok, and that was when he found the great roots. While one had died, the other had stayed alive long enough to show him what had happened. She was gone. Ivy, his love, had sacrificed herself for the plants of Gotham, and had stopped the cloud with Batman.
At first Thorn had been enraged at Batman, but then the spores told him more details. This was Scarecrow's fault. This was the Arkham Knight's fault. Thorn shouted at the sky, an angry guttural noise that caused the plants to cry out in unison. They felt his pain, they were a comfort in this trying time. As he began to look about, he noticed that the city was beginning to heal from that night. So Batman had saved the city. That would make finding Scarecrow easy. He would probably be at either the Police Station, or the new facility they were building. Thorn would check the station first. As he approached the station a newspaper flew into his face, and as he tore it off he noticed the headline. Batman was dead, and not only that Batman had been Bruce Wayne. What had happened on that night? Thorn decided to give it a few more days and to collect more information before he went after Scarecrow and this Arkham Knight character. That was another thing, he thought. Who was the Arkham Knight? He would have to find out if he was to truly get his revenge. He sank under the earth and began moving towards his hidden shelter, right under the heart of Gotham.