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Character info
Smash 4 mains Lucina, Marth
Other Smash 4 characters Meta Knight, Corrin, Olimar
Ultimate main Palutena
Other Ultimate characters Sephiroth, Cloud, Corrin, Byleth, Meta Knight
Retired Ultimate characters Lucina, Chrom
Team info
Former sponsor(s) Fatal Ambition, BlaZe Esports
Crew(s) SweetSpot, Pacific Sun
Rankings and results info
Most recent ranking Super Smash Bros. 4 Costa Rican Power Rankings: 1st
Super Smash Bros. Ultimate UltRank 2022: 85th
Personal and other info
Real name Jason Valverde Mora
Location San José, San José Costa Rica

Yei (pronounced "Jay") is a Super Smash Bros. Ultimate player from Costa Rica, known for having a diverse roster and has formerly played primarily Meta Knight. He is considered one of the best players from Central America and was the definitive best up until mid-2022. He has defeated players such as Maister, Mr E, Meme, Joker, Chag, Cloudy, Javi, and Skyjay. He is currently ranked 2nd on Costa Rican Power Rankings, 85th on UltRank 2022, as well as being an honorable mention on the OrionRank 2022.

In Super Smash Bros. for Wii U, Yei was known to have mastery over multiple characters, but mainly played Lucina and Marth. His breakout tournament was at Smash Factor 7, where he defeated Rox and Cloudy before losing to ANTi in a close game 5 set, placing 9th.

Yei joined the Costa Rican organization OG Esports (not to be confused with the famous Danish organization OG) on July 9th, 2019[1]. The organization eventually merged with the American team Fatal Ambition in early 2021 and Yei was kept in the roster. However, the organization became inactive in early 2022 and Yei removed Fatal Ambition's tags from his socials since then.

Starting January 21st, 2023, Yei was banned from attending tournaments in Costa Rica for a year due to alleged poor behavior.[2]


Yei is a versatile player, able to switch playstyles quickly when necessary. His most consistent approach, however, is to maintain an aggressive, yet calculated and patient neutral game. From his aggression, he will go for deep edgeguards, juggles, and early kills.

For Palutena, he pairs a strong neutral and consistent punish game, and often uses Palutena's tools to go for quick kills or capitalize as much as he can. For Meta Knight, he plays for combos, spacing, and quick edgeguarding, while also using Meta Knight’s jumps to make his landings difficult to punish. He is highly proficient in Meta Knight's ladder combo, able to consistently ladder and finish off his opponents even at higher percents when the combo is DI-prone and much harder to complete.

Tournament placings[edit]

Super Smash Bros. for Wii U[edit]

Tournament Date 1v1 placement 2v2 placement Partner
No Johns #1 April 22nd, 2017 1st
Naifu Wars: World War 1Online May 5th, 2017 13th
No Johns #2 May 20th, 2017 1st 1st JM
No Johns #3 June 17th, 2017 1st
Naifu Wars: World War 2Online June 23rd, 2017 7th
Subs Not Scrubs: EEOnline June 26th, 2017 3rd
OnettBoyz Mega Monthly 4Online June 28th, 2017 5th
Subs Not Scrubs: Smash StudiosOnline June 30th, 2017 1st
No Johns #4 July 29th, 2017 1st
No Johns #5 September 23rd, 2017 1st
No Johns #6 October 21st, 2017 1st 1st Delfino
No Johns #7 November 11th, 2017 1st
Smash @ Carl's PTY November 19th, 2017 1st 1st Tavo
Gameshow Smash Legends November 26th, 2017 1st
No Johns #8 December 9th, 2017 1st
No Johns #09 January 13th, 2018 1st
Naifu Wars: Civil War 2Online February 17th, 2018 7th
No Johns #10 February 24th, 2018 1st
No Johns #11 March 17th, 2018 1st
SweetSpot's Summer Invitational April 28th, 2018 1st
No John's #12 May 26th, 2018 1st
No John's #13 June 16th, 2018 1st
Naifu Wars: World War 4Online July 14th, 2018 13th
Smash Factor 7 July 20th-22nd 2018 9th 9th Emile
Furia Tica 2018 August 11th-12th, 2018 1st
GAME ON! September 30th, 2018 1st 1st EDKILL
No John's #16 October 20th, 2018 1st
Ultimate Fiesta at SweetSpot December 8th, 2018 1st

Super Smash Bros. Ultimate[edit]

Tournament Date 1v1 placement 2v2 placement Partner
No Mercy #01 January 20th, 2019 1st
No John's #18 January 26th, 2019 1st
No Mercy #02 February 17th, 2019 1st
Empire Play Smash Ultimate March 2nd-3rd, 2019 1st
No John's #20 March 16th, 2019 1st
No Mercy #03 March 31st, 2019 1st
No John's 21 @ Festival 1Up April 13th, 2019 1st
Easter Tournament April 21st, 2019 1st
No Mercy #04 April 28th, 2019 1st 1st ~SynKratos~
No John's #22 May 18th, 2019 1st
No Mercy #05 May 26th, 2019 1st
No John's #23 June 8th, 2019 1st
No Mercy #06 June 29th, 2019 1st
SweetSpot Summer Invitational 2019 July 13th, 2019 1st
No Mercy #07 July 20th, 2019 1st
Smash Factor 8 July 26th-28th, 2019 7th 17th LumaKing
No Mercy Nivelado e Invitacional September 7th-9th, 2019 1st
Zafarrancho Pro Circuit September 15th, 2019 1st
Smash @ Fede's #2 September 19th, 2019 1st
No John's 26 September 21st, 2019 1st
Smash @ Fede's 3 October 3rd, 2019 1st
Zafarrancho Pro Circuit 2 October 13th, 2019 1st
Smash@Fede's #4 October 17th-18th, 2019 1st
No John's #27 October 19th, 2019 1st
GAME ON! 2019 October 26th-27th, 2019 1st 1st ShinyMark
No John's #28 November 23rd, 2019 1st
No Mercy #09 December 7th, 2019 1st
Smash Legends 2 December 14th-15th, 2019 1st 1st AnDy
Zafarrancho Pro Circuit 4 January 11th, 2020 1st
SweetSpot Winter Invitational 2020 January 18th, 2020 1st
No Mercy #10 January 26th, 2020 1st
Smash Vertex February 6th-9th, 2020 2nd 7th JoJoseph VolG
Zafarrancho Pro Circuit 5 February 15th, 2020 1st
No Mercy #11 February 29th, 2020 3rd
Chill in SmashOnline April 10th-13th, 2020 1st
Ultimate Naifu Wars 11Online May 15th, 2020 65th
The Online OlympusOnline May 31st, 2020 33rd
Ultimate Naifu Wars 12Online June 12th, 2020 49th
The Top Low TierOnline June 20th, 2020 1st
Blink Esports BattlegroundOnline August 22nd, 2020 5th
Blink Esports Battleground 2Online September 19th, 2020 5th
Blink Esports Battleground 4Online November 21st, 2020 4th
SWT: Central America South Ultimate Online QualifierOnline March 27th-28th, 2021 7th
SWT: Central America South Ultimate Online Qualifier Last Chance QualifierOnline March 28th, 2021 1st
Weed TankOnline April 20th, 2021 13th
SWT: Central America Ultimate Regional Finals August 21st-22nd, 2021 5th
Anime World Coliseum December 12th, 2021 1st
The Box: Lunch Box 18Online January 26th, 2022 13th
The Box: Lunch Box 19Online February 23rd, 2022 9th
Lagn't 2 March 6th, 2022 1st 1st Brandon
Delfino Maza RETA 2022 April 1st-3rd, 2022 9th
Lagn't 3 July 10th, 2022 1st
Factor Prelude July 24th, 2022 5th 1st Keen
Smash Factor 9 July 29th-31st, 2022 13th 9th Genialo
Smash Legends 3 October 16th, 2022 2nd
CUMBRE November 4th-6th, 2022 3rd
La Super Liga: Bloom To Fight April 30th, 2023 1st


  • Currently, Yei does not have a visa and therefore cannot attend tournaments in the United States.
  • Yei won every Central American tournament he attended since Smash 4 until No Mercy #11, where he lost to Emile and Nacho.

Gameplay videos[edit]

Super Smash Bros. Ultimate[edit]


External links[edit]