SQ

SQ is a unit series under the management of TSUKINO TALENT PRODUCTION and features the units SolidS and QUELL. Initially, the series only contained SolidS who debuted shortly after the ALIVE units, while QUELL weren't introduced until late 2016. Both of the units of SQ were featured in TSUKIPRO THE ANIMATION alongside the units of the ALIVE series.

Similar to how the TSUKIUTA. units are themed after the twelve months and the VAZZROCK members each represent a type of gemstone, the SQ units together with ALIVE represent the four elements (fire, earth, water and wind), with SolidS being fire and QUELL being water. The SQ units have the same mascot type; Lizzes which take the shape of a squirrel (a play on the Japanese word for squirrel [リス Risu] and the katakana for SolidS [ソリッズ Sorizzu]), with each member having their own Lizz named after their respective fan club.

Trivia

• Their series illustrator is You Satsuki.
• Unlike the units from the ALIVE series, SolidS and QUELL do not share a single producer. In-universe Shiki Takamura is the producer for SolidS, but in reality they are produced by Akira Takizawa who is also responsible for both units from ALIVE. QUELL on the other hand have Shu Izumi as their in-universe producer while in reality they are handled by Takeshi Hama.