Fiske is a villain who specialises in the mystical and martial arts. More specifically, he is obsessively consumed with the study of Tai Shing Pek Kwar, or Monkey Kung-Fu, and with monkey-themed magical artifacts.
Fiske was originally an archaeologist and most of his appearances open with the search for a specific monkey artifact that will drive the rest of the plot.
His personality includes many monkey-derived tics, such as a hooting laugh and a tendency to knuckle-walk. His physiology has been altered by DNAmy to include hands and feet like those of a monkey.
Due to Ron Stoppable's pathological fear of primates, Monkey Fist considers Ron to be his enemy on equal footing with or perhaps ahead of, Kim Possible, especially since Ron and Rufus are the only other beings to possess mystical monkey power. He hates to admit that Ron being his arch-foe, referring to him as an "arch-bumbler" on at least one occasion. His final appearance was in the Season 4 episode "Oh No Yono," where he is reverted into a stone statue in fulfillment of his 'destiny,' to follow the path of the Yono, and was still so as of Ron's graduation from high school.
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