Joel Isai Alvarado, often referred to as simply "Isai", is considered the world champion of Super Smash Bros. and was ranked 7th best in the United States in Melee before he retired. He mains Pikachu and Fox in Super Smash Bros, but can use nearly the entire cast at top professional level, Link being his most popular secondary. He mained Captain Falcon and Sheik in Melee, while using Fox as a secondary. He was also ranked first on the NorCal Power Rankings. Having retired from Melee, Isai now plays Smash 64 exclusively. As a result of his particularly high technical expertise and skill in both Melee and Smash 64, the phrase "Isai is too good" became a meme in the Smash Bros. community.
 Super Smash Bros.
Isai is the undisputed world champion of Super Smash Bros. He has yet to lose a single 12 character battle and the only smasher who has shown true competition to his Pikachu is the Peruvian champion Gerson, who has taken multiple matches against Isai in dittos. Isai is currently ranked 3rd on the Smash 64 ELO Rating.
Isai traveled to West Japan in November of 2006 to play the professional players there. However, no sets against the Japanese champion Jousuke (nor many other top Japanese players) were recorded and as a result of this, Isai generally did not have any true competition.
Isai is in part responsible for the higher position of Link in the most recent tier list, due to his overall astonishing performance with the character, later confirmed at Apex 2012 where he managed to finish second by only using Link, only losing to SuPeRbOoMfAn's Captain Falcon and still winning a few matches against the latter. However, with the recent banning of Hyrule Castle in certain rulesets (including Apex 2014), this newfound position is again in jeopardy.
Isai in his prime was regarded as the best Melee Captain Falcon player in the world. Although his placings at Melee singles tournaments lowered over time, he is one of the few players to have defeated previous Melee World Champion Ken Hoang multiple times.
Isai and Ken constituted El Chocolate Diablo, the strongest doubles team in the world circa 2004-2006. El Chocolate Diablo remained undefeated in tournament sets until their loss to Taj and Forward and placed 1st at every tournament they entered until placing 2nd behind Azen Zagenite and Chillindude829 at MLG Chicago 2006. However, Isai and Ken would later win the final MLG National Championship for Melee teams in 2006. Following this win, El Chocolate Diablo became inactive for almost a year until their final appearance at Super Champ Combo, where they placed 7th.
 Loss of interest in Melee
Despite his success, Isai gradually lost interest in Melee. In early 2010, Isai expressed interest in playing Melee seriously again, but after smashing with Scar and entering a handful of tournaments, Isai still did not find it enjoyable anymore.
 Notable sandbagging incidents
Isai has lost a few major Smash 64 North American tournaments to SuPeRbOoMfAn, such as Apex 2012. However, he was clearly sandbagging in Apex 2012 by using Link for the entire tournament, and as such, many players still considered him a better player than SuperBoomFan due to doing so well in such a difficult matchup. He also used other low tier characters, including Yoshi and Jigglypuff, in some other tournaments such as GENESIS 2.
At Apex 2012, he was unexpectedly convinced by the crowd to play a Melee exhibition match against the other Smash veteran Captain Jack. However, he only sandbagged and was 4-stocked by Captain Jack, much to the audience's dismay.
Isai also lost to Kikoushi in Apex 2013, but was sandbagging again to a lesser extent, using Mario. After later playing some friendlies against Kikoushi using Pikachu and Fox, the result was much different with the matches being much to Isai's favor. He even won some Kirby dittos against him.
Isai has said that he will be using Jigglypuff in Apex 2014, which appears to be another sandbagging attempt.