I read some time ago (I can't vouch for the accuracy of my memory—but it's all I've got to go on for this) that Jean Giraud, aka Moebius, attempted to reinvent himself for a new series. I think I read that he felt that many people perceived Moebius' work to be dark and intimidating. So with his new production of lighter, spiritually uplifting work, he also used a new signature, a pseudonym of sorts: Jean Gir.
A rose by any other name . . .
Okay, I'm back. I just did some research, which of course is what I should done the first time around. Check down below at the end of this post. I'm going to quote directly from Randy & Jean-Marc Lofficier:
In 1980, Moebius met French philosopher and spiritualist Jean-Paul Appel-Guery, who had a powerful influence on him and his work during the 1980s. Through Appel-Guery, Moebius also met writer-journalist Paula Salomon, and later young artist Marc Bati. Salomon, with fellow writer Charlie Cooper, wrote a remarkable book on parapsychology, La parapsychologie et Vous, which Moebius illustrated. These illustrations were reprinted in Chaos (Marvel, 1991). For Bati, Moebius eventually co-created and wrote the Altor series, aka The Magic Crystal.
Appel-Guery encouraged Moebius to tap into the more positive zones of his subconscious. "Most of the people that were studying spirituality with Appel-Guery did not know much about comics, but they immediately picked on the morbid, and overall negative feelings that permeated my work," said Moebius. "So I began feeling ashamed, and I decided to do something really different, just to show them that I could do it." And Moebius did just that in stories such as The White Citadel and Double Escape (in Pharagonesia, Marvel, 1988) even creating the new sigature of "Jean Gir."