MyGO!!!!! is an all-girl band in the BanG Dream! franchise. The group consists of five members: Takamatsu Tomori (CV: Youmiya Hina) on vocals, Chihaya Anon (CV: Tateishi Rin) on rhythm guitar, Kaname Rāna (CV: Aoki Hina) on lead guitar, Nagasaki Soyo (CV: Kohinata Mika) on bass, and Shīna Taki (CV: Hayashi Coco) on drums. Their name is a play on Japanese word 迷子 (maigo) meaning "lost child" and the phrase "it's my go" in English, meaning it's my turn.

They debuted with the song 迷星叫 (sometimes stylized as MAYOIUTA). Their debut album was 迷跡波.

The band is led by Tomori, a timid girl who has been burned by the collapse of her last band (CRYCHIC). Wanting to avoid being hurt again, she insists that MyGO!!!!! has to last a lifetime. Right next to her is Anon, who transferred into Tomori's class and invited her to join a band to fit in with the girls band fad in her school. Anon is an invaluable friend to Tomori, as they learn together to move forward, even as the lost. "Stray Cat" Rāna is an eccentric girl who marches to the beat of her own drum (or, in her case, beat-up guitar). At first, she can be unreliable and/or confusing, but she warms up to this mishmash of "interesting girls". Also a member of Tomori's former band, Soyo is a pleasant and amiable girl. She wants to reconnect the members of CRYCHIC in her new band. Taki, another member of CRYCHIC, can often be brash, even when she doesn't mean it. She is never rude to Tomori, whom she becomes deeply affectionate towards after hearing her lyrics.

The band debuted from June to September 2023 in titular drama anime BanG Dream! It's MyGO!!!!!, which focuses on the collapse of CRYCHIC and the subsequent formation of MyGO!!!!!. CRYCHIC's other former members (Wakaba Mutsumi and Togawa Sakiko) are featured in the side plot of the anime, eventually forming sister band Ave Mujica, who later starred in drama/psychological horror anime BanG Dream! Ave Mujica ~ The Die Is Cast~, which premiered from January to March 2025, and also featured MyGO!!!!!.

BanG Dream! affiliated bands typically feature real-life bands which are formed by their voice actresses, MyGO!!!!! being no exception. The real-life band debuted in July 2023. Their identities weren't revealed until their 4th LIVE in April 2023. They performed with Ave Mujica in a joint live in April 2025.

MyGO!!!!!'s music has been said to have been influenced by melodic hardcore and punk rock genres. They are typically classified simply as anime, rock, or j-rock. Their songs are canonically written by Tomori and composed by Taki, but in real life feature a variety of writers and producers. Their head writer is Fujiwara Masuki. The composition of their music is usually handled by Japanese music production company SUPA LOVE, primarily Hasegawa Daisuke and Kinoshita Ryuuhei, although they tend to feature a variety of producers, especially in their second album 跡暖空. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.