The group did not yet have a name when they were announced on January 2, 2015 at Hello! Project 2015 WINTER〜DANCEMODE!〜. Their name would be decided by the end of January, though for reasons not stated, the decision ended up being delayed until late February.
Kobushi Factory has 8 current members.
Hirose Ayaka has been leader since March 8, 2015.