[Author: Apparently, I was not clear about his power. He only has someone's power while they are in his domain, the moment they leave he loses it and their skills but not their skill knowledge. An Example: So, he meets Tony Stark and gains a boost to his intelligence and knowledge about any Skills Tony has. He focuses on making an AI and gets halfway when Tony leaves his Domain, now he no longer has the intelligence boost, but he does have the knowledge to finish the AI, and only the AI. The way the Justice League beat him was with none powered/Item using/Android members but even then, he was hard to defeat as he out-will-powered Green Lantern and dodged Green Arrows shots. They brought him back after 20 years (RL years) and gave him a suit that allowed him to keep his powers longer.]