Later, during Barry Allen's trial, the two would fight again. Soon afterwards, Big Sir was abducted and taken to Gorilla City, a secretive place filled with hyperintelligent primates. His intellect was heightened and he decided to retire his costume and find a way to contribute to society.
When he returned as a part of the Injustice League, however, his intelligence had returned to its prior low levels. The team, led by Major Disaster, survived largely due to bizarre luck that often saved their lives and their freedom, but rarely their dignity. In one instance, Big Sir frightened one of his League colleagues out of a fortune because he did not realize visiting a fragile old lady who did not know him was a bad thing to do.
Big Sir and his friends attempted to learn the French language but this ends badly because the Justice League Europe ended up being in the same class. A fight inevitably broke out. This involves Big Sir meeting his enemy's successor, Wally West.
Big Sir and Major Disaster by themselves broke the bank at the unofficial Club Justice League, leading, quite naturally, to much chaos and confusion. This confusion was further enhanced by the Club having been built on a sentient island, Kooey Kooey Kooey, who choose the time of the incident to go traveling.
The Injustice League even once became Justice League Antarctica. There, Big Sir encountered flesh-eating penguins and had his life saved by the canine Green Lantern, G'Nort. The entire Antarctica base was destroyed in a battle with flesh-eating penguins. Though Justice League America had to intervene, G'Nort did save the lives of his teammates.
After the fiasco with the JLA, he was fired by Maxwell Lord with full benefits and a month's pay, along with all his friends. This measure of respect prompted a visit to Max in Justice League Of America #53, the first part of the Breakdowns crossover. Max was in the hospital after a brutal assassination attempt. There, Big Sir accidentally injured four police officers when he simply wanted to remove their guns. This, combined with a panicking nurse, caused the room to be surrounded by police, who believe Max to be in danger.
The Martian Manhunter uses his invisibility to spy on the group. He decided to leave them there, as he believed they would make perfect bodyguards.
Big Sir and his friends also provided support to the League during the Dreamslayer/Despero crisis.
Big Sir later joined the Suicide Squad in return for a pardon, along with most of his Injustice League friends. They are sent in to deal with a terroristic/hostage situation on a small island owned by the country of Iceland. Big Sir encounters a genetically engineered biological form in shape of a small child. When he picks it up, thinking it is a real child, it explodes in his arms. He is killed instantly.