I am trying to create guidelines for bibliographic cataloguers here who
are not NACO-trained but often need to create simple access points in
bibliographic records.  (We do not have enough NACO cataloguers to
create NARs for everything.)  The AAPs need to be correct and
appropriate as far as they go, although they may lack the more
sophisticated types of differentiation.  I can't always find clear
answers to my questions in RDA. 

RDA includes examples of preferred names for fictional 'persons', e.g.
Kermit the Frog.  Presumably these are to be used in AAPs (although I
don't see any examples in 9.19ff.).  If so, how are the AAPs to be used?
Are we supposed to consider fictional names simply as pseudonyms for the
real author(s) and therefore use them as the first element in name-title
AAPs, which in MARC terms makes them candidates for main entry?  

My own preferred take on this is that if a resource attributes
responsibility to an entity known not to be the real creator, *including
a fictional entity to whom responsibility is attributed facetiously,*
the record's description should make this clear, either by a
square-bracketed clarification of role in the statement of
responsibility [2.4.1.7] or in a note, and the main entry should
correspond with this information, not with the transcribed information.
Example:

100 1_ $aLynn, Jonathan,$eauthor.
245 10 $aYes, Prime Minister :$bthe diaries of the Right Hon. James
Hacker /$cedited by Jonathan Lynn and Antony Jay.
500 __ $aFictional diaries written by Jonathan Lynn and Antony Jay.
700 1_$aJay, Antony, 1930-$eauthor.
700 1_ $aHacker, James.  [Fair enough to have an added entry, because
people might search under this heading - some Amazon Marketplace records
have James Hacker as author]

If the main entry has to be the
fictional-entity-regarded-as-a-pseudonym, the note would not be
appropriate, because (i) one does not correct pseudonyms, and (ii) it
makes poor sense to state that a resource is by Lynn and Jay but make
Hacker the main entry.  However, I think that the note is of use to
readers.  (Some) readers do think that the difference between
establishing a literary persona and having a little joke is significant.

*******************
Bernadette O'Reilly
Catalogue Support Librarian
01865 2-77134
Bodleian Libraries,
Osney One Building
Osney Mead
Oxford OX2 0EW.
*******************