In 2258, Migo was present when Walker Smith, a human boxing champion, challenged the local "Sho-rin" in the Mutai. Migo was angry about this, as humans had never been accepted into the Mutai. Migo considered humans as meddlers who only caused problems for other races. He vowed to Smight that he would protect the integrity of the Mutai.
Three days later, during the fight between Smith and the Sho-rin Gyor, Migo planned to murder Smith with a PPG in the midst of the fight. He was thwarted in his attempt by Smith's friend Michael Garibaldi who was in the crowd.