Clara and Bruno are aimed at Spanish music professionals and the first Vocaloids aimed at the Spanish culture. They do not incorporate the moe-esque style of the Japanese Vocaloids and their designs are more aimed towards a retrospective western art style.
Clara has had a backlash based on her illustration, mainly for lacking an anime-like design or referred to as not having the appearance of a Vocaloid, with some going so far as to label Clara and Bruno as "ugly"; however, within the Spanish fandom there have been reports of strong defense from fans of the pair and Vocaloid. The voice type itself; however, has been noted to be appealing in general despite the issues some fans have had for the boxart. The reaction towards the inital artwork had a later impact on future Vocaloids, and it was one of the theories put forward as the reason Yamaha rejected the original non-"anime-esque" design for Avanna.
By March 2012, Bruno and Clara were amongst the least popular of the Vocaloid 3 voicebanks, though together they are more popular then Tonio, neither suprassed his popularity when weighed in seperately.