William Belaïd (born June 1, 1995), commonly known as Glutonny, is a French professional Super Smash Bros.

[8] Super Smash Bros. for Wii U released in Europe in November 2014, but Glutonny would not achieve notable results in the title until 2016.

In February of that year, he took 2nd in the Smash for Wii U competition at Cannes Winter Clash, a French multi-esport tournament.

[13] In March, he traveled to Santa Ana, California to compete in 2GGC: Civil War, the most talent-heavy Smash for Wii U tournament held to date,[14] and tied for 65th.

[18] In January 2018, Glutonny won the Danish tournament Valhalla, using Wario, Cloud Strife, and Donkey Kong.

During the tournament, he defeated elite Super Smash Bros. Melee player William "Leffen" Hjelte in a reverse sweep.

"[28] Following his victory at Valhalla II, Glutonny departed orKs Grand Poitiers and signed with French esports organization Solary, which gave him the funding to travel to tournaments held outside of Europe.

In the grand finals, he lost the first set 3–1 to Samuel "Dabuz" Buzby, before beating him by the same score in the bracket reset to win the event.

[26] Glutonny continued his dominance over European competition in the second half of 2019, losing only two tournaments held on his home continent, both to Mexican player Leonardo "MkLeo" López Pérez.

[36] The following month he placed 3rd at Evo 2019 in Las Vegas,[37] the largest tournament by number of entrants in the Smash Bros. franchise's history,[38] then tied for 5th at SwitchFest 2019 and 9th at Mainstage.

[39][40] In October he took 2nd at Ultimate Fighting Arena 2019 in France, one of the two European tournaments he lost to MkLeo,[41] then won Syndicate 2019 in the Netherlands.

[47] However, later that month he would fail to make the top 50 in Pound Online,[48] and tied for 97th in the 128-player invitation The Quarantine Series: Major Tournament 1 in early May.

[55] In another interview he explained that in addition to Wario's mobility, the character is highly fluid, allowing Glutonny to create combos on the fly.

Between that and the character's motorbike being a potent projectile weapon, Wario "has all the tools in order to counter every game style".

[56] In 2017, he noted in an interview that Wario was weaker in Smash for Wii U than he was in Brawl, and that as a result Glutonny had to change his playstyle and do extensive testing to find which techniques worked in the new game.