MI6

MI6, alongside MI5, was one of several organisations which, seeking to bring Jenny Everywhere in for questioning and jointly put up a 'Wanted' poster for her, whose efficacy was lessened by the fact that they did not know about Jenny Everywhere's multi-dimensional nature and thus found the contradictory nature of eyewitness reports about her appearance utterly baffling. (PROSE: Wanted for Questioning)

Behind the scenes

Being a real organisation, MI6 is functionally in the public domain as a potential element of fictional narratives.

Ironically, E. Moneypenny, also cited in Wanted for Questioning (this time as a “known associate” of Jenny rather than an enemy), is implied to be Eve Moneypenny from the James Bond franchise, a character who works for MI6.