He is a performer(dancer) of J-Pop dance and vocal group Sandaime J Soul Brothers and a former member of Gekidan Exile.

He debuted as a soloist in collaboration with Exile Shokichi in the song "THE ANTHEM" on June 4, 2014, and released his first solo album NEOTOKYO FOREVER on July 4, 2018.

[5] Elly's father is former OPBF Super Welterweight Champion Carlos Elliott [ja][2][6] and his younger brother, Likiya, is also a dancer and leader of the J-pop dance and vocal group The Rampage from Exile Tribe.

[2] His father is former OPBF's Super Welterweight Champion Carlos Elliott and his younger brother, Likiya, later followed the example of Elly and became a dancer too.

[2] It was during these busy days when he saw the performance of the dance team "BASE HEADS" at a club in Shibuya, that he decided he wanted to be a dancer just like them at the very moment.

Apart from performing at clubs and events, he also appeared as a backup-dancer in the music videos of singers like Toshinobu Kubota and Meisa Kuroki.

[2] In March 2010, Elly was scouted by EXPG Studio (a talent school run by LDH) to perform in Gekidan Exile's play NIGHT BALLET as a guest dancer.

[21] At the end of the year, Elly and his group appeared on the stage of NHK Kohaku Uta Gassen for the first time, performing their single "Hanabi".

On April 12, the movie Crows Explode was released, in which he made his acting debut by playing Suzuran's new first-year boss Yamashita Gohei.

[2][24] The song also won Sandaime J Soul Brothers the Japan Record Award[25][26] and skyrocketed the group to mainstream success.

[29] Even though his voice began to appear in the songs of Sandaime J Soul Brothers more often after that, he continued to be simply be referred to as a performer in the group, not a vocalist.

To get support from his company and debut as a rapper, he created his own albums and handed them out to the staff and Hiro, the CEO of LDH, showing them what kind of music he could make and asked for advice.

[42][43] On February 24, 2017, Elly released his first mini-album NEOTOKYO EP as CRAZYBOY, earning the #1 spot on the weekly music downloading charts of four major media-service providers in Japan.

[47] In February, he joined Snoop Dogg, PKCZ and Yultron in producing the international collaboration "BOW DOWN FT. CRAZY BOY from EXILE TRIBE".

[51][52] On June 22, it was announced that Elly had migrated record labels from Rhythm Zone to LDH MUSIC for his solo activities.

On September 12, it was announced that Elly would feature on the Japanese version of Jessica Jung's new single "Call Me Before You Sleep", aiming to be released on October 19.

[60] On July 24, the KING＆KING project held a special media event in Tokyo, announcing that a single KING＆KING by Exile Shokichi vs CrazyBoy would be released on October 7.

[63] On January 3, 2021, it was announced that CrazyBoy would release two singles, OH and Amnesia on February 27, with a tilted song "OH" produced in collaboration with Shota Shimizu and OZworld.

On January 27, 2019, Elly teamed up with CRAZY Raccoon's UyuRiru and took part in Fortnite Summer Smash at the Australian Open's Pro-Am Duos event.

[71] On June 16, he teamed up with CRAZY Raccoon's Scarlet and took part in Fortnite Summer Block Party's celebrity Pro-Am of 2019.

[73][74] On February 1, 2020, he was part of the Japanese team at the AO Summer Smash 2020 hosted by the Australian Open alongside professional gamer Ruri and influencer NEKO.

Elly, who won 3 thousand dollars, donated all of his prize money to the Australian Red Cross to support the combat against the Bushfires in Australia.