one notable characteristic is that none of the members have ever shown their faces in the public sphere as a part of greeeen, whether in their promotional videos, cds, television performances, or the internet. in their only performance on tv-u fukushima's music show music bar palo palo (broadcast on january 19, 2007), the group even went as far as censoring their faces during the performance. greeeen cites keeping their professional lives in dentistry compatible with their musical ventures as the reason, but one of the members, hide, has hinted that after all of the members pass the prefectural examination in dentistry and receive permission from the directors of the hospitals they work for, the group may consider a public appearance.