In this 
Spanish name, the first or paternal
 surname is 
 López and the second or maternal family name is 
 Pérez.
| MkLeo | 
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| MKLeo at Frostbite 2020 | 
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| Name | Leonardo López Pérez | 
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| Nickname(s) | MkLeo, Leo | 
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| Born | (2001-01-20) January 20, 2001 | 
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| Nationality | Mexican | 
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| Signature |  | 
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| Games | Super Smash Bros. for Wii U Super Smash Bros. Ultimate
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| Playing career | 2009–present | 
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| 2017–2019 | Echo Fox | 
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| 2020–2023 | T1 | 
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| 2023–present | Luminosity Gaming | 
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| Super Smash Bros. for Wii U
 (12 majors won) 2x Genesis champion (2017, 2018)2GGT: ZeRo Saga champion (2016)Umebura Japan Major champion (2017)GameTyrant Expo champion (2017)IBP Masters Showdown champion (2017)2GG Championship champion (2017)Evo Japan 2018 championSwitchFest champion (2018)Get On My Level champion (2018)Community Effort Orlando champion (2018)Super Smash Con champion (2018)
 Super Smash Bros. Ultimate
 (25 majors won) 3× Genesis champion (2019, 2022, 2023)2x Smash Ultimate Summit champion (2019)MomoCon champion (2019)Smash 'N' Splash 5 champion (2019)Community Effort Orlando champion (2019)Evo champion (2019)Super Smash Con champion (2019)Ultimate Fighting Arena champion (2019)2GG: Kongo Saga champion (2019)Frostbite champion (2020)Riptide champion (2021)Low Tide City champion (2021)Port Priority 6 champion (2021)Mainstage champion (2021)Smash World Tour 2021 champion (2021)Delfino Maza RETA 2022 champione-Caribana champion (2022)COLOSSEL 2022 championSmash Factor 9 champion (2022)Rise 'N Grind champion (2022)Ludwig Smash Invitational champion (2022)King Con champion (2024)
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Leonardo López Pérez (born January 20, 2001), better known as MkLeo and sometimes Leo, is a Mexican professional Super Smash Bros. player. He was widely considered the best Super Smash Bros. Ultimate player in the world during the pre-COVID era, and was ranked #1 in the Panda Global Rankings for the first and second half of 2019. He is also widely considered to be the best Super Smash Bros. Ultimate player of all time. 
Prior to the release of Ultimate, he was ranked as the best player in the world at Super Smash Bros. for Wii U for the first half of 2018.