After the crippling defeat at the hands of Batman, the Thinker had to be quick with his plan, not too quick of course. He sat and thought it out. Should he team with the Joker he thought… No too obvious. How about Killer Croc? No he’s too stupid. Then it came to him, if he worked with Scare Crow they would be able to take him down. Scare Crow could distract him some form of trickery and then the Thinker would be able to strike and gain his much needed revenge.