Sampson left with the rest to protect the female and children apes while Caesar's Army fought Colonel McCullough's forces. Sampson helped Red disarm members of the Guard who didn't support Koba and helped killed Ursus and severely injured Ajax when they woke up. Red then sent Olo with Sampson to find Cornelia after she managed to escape. It is unknown what happened to him after Red's attempted coup failed.

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