The only thing there is evedence in robotech that there is religion amungst, Rick, Max, Miria, Ben, Roy, Lisa, Claudia, is that they have episode 35-85 "season Greatings". science this is an american show, they celebrate christmass like every christian in the us.
there is no evidence In Macross, exept episode 35-36 (the name slipes me at the moment) there celebrating christmass like all japanese, even though there in alaska. I know this much, max is Catholic, and european thata about it.