If you are referring to MMA fighters of Hispanic origins (vs. Spaniards), some popular examples are:
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I will be the best Spanish UFC fighter in the world my name is Phillip Flores 14 years old you just wait till the mid 20s of the 21st century you'll see me on Tv
George St Pierre !!
Alexander Volkanovski is considered to be the best Australian MMA fighter. He is UFC featherweight champion.
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The coaches for season 7 of the UFC's Ultimate Fighter are Forest Griffin and Quinton Jackson The coaches for season 8 of the UFC's Ultimate Fighter are Frank Mir and Antônio Rogério Nogueira