FANTASTIC FOUR (1961) #28

At the start of this issue, the Fantastic Four are discussing the X-Men. Meanwhile, the Puppet Master and Mad Thinker are meeting up, as the Mad Thinker has a plan that will stop the Fantastic Four. He orders the Puppet Master to create a puppet of the X-Men’s leader, and using the Thinker’s exact calculations, manages to create a puppet of Professor X which can control him. Professor X then tells the X-Men to capture the Fantastic Four. Since they don’t realise Professor X is being controlled, they obey him and fly their helicopter to the Baxter Building. Upon going into the building and greeting the Fantastic Four, they get mentally told by Professor X to capture them.…