The group originally consisted of: Alice, Nara, Lime, Yooara, Yoonjo and Yooyoung.

Yooara and Yoonjo remained under Pledis, with the other four members continuing their group activities under Fantagio.

[3] Yoo Ara and Yoonjo were trainees of After School, both having performed on their first album Virgin and were originally intended to join the group.

She was also a rapper in Lee Jung's "들어봐 (Look At Me)"[6] and Honey Family's "역전의 드라마 (Reversal of Drama)"[7] under the name Haley.

Alice was previously a solo singer under the stage name of "Ora" and released the single "Naughty Face" in 2010.

On 1 May 2018, it was announced that she had sued her former company for not giving her proper training and allegedly trying to force her to wear revealing outfits and perform in adult entertainment venues.

concluded on 27 January, however on 30 January, Tricell Media announced that the group would begin promoting their follow-up song, "Romantic Love" immediately, with the first performance on MBC Music's Show Champion the same day.

[15] The following day, Tricell Media announced that the group will hold their first solo concert at Sogang University's Mary Hall on 22 June.

[17] On 22 October, Fantagio introduced two new members: Seoyoung and Yeoreum, and announced that the group would be making their comeback with a single in the following month.

On 6 May 2016 Fantagio posted the first teaser images of members, Nara, Yeoreum and Seoyoung.

[22] On 10 July, Fantagio announced that the group will be releasing a second collaboration song with Devine Channel, called "Paradise".

[28] In October 2012, five months after their debut, Hello Venus became endorsement models for Bugs 3.0, a smartphone music application from Neowiz Internet.