Wolverine
Wolverine is a fictional character, a superhero that appears in comic books published by Marvel Comics. Born James Howlett and commonly known as Logan, Wolverine is a mutant who possesses animal-keen senses, enhanced physical capabilities, and a healing factor. He has been depicted variously as a member of the X-Men, Alpha Flight, and the Avengers.
The character first appeared in the last panel of The Incredible Hulk #180, with his first full appearance in #181 (cover-dated Nov. 1974). He was created by writer Len Wein and Marvel art director John Romita, Sr., who designed the character, and was first drawn for publication by Herb Trimpe. Wolverine then joined a revamped version of the superhero team the X-Men, where eventually writer Chris Claremont and artist-writer John Byrne would play significant roles in the character's development. Artist Frank Miller collaborated with Claremont and helped to revise the character with a four-part eponymous limited series from September to December 1982 in which Wolverine's catchphrase, "I'm the best there is at what I do, but what I do best isn't very nice," debuted.
The X-Men
The X-Men are a fictional team of superheroes that appears in American comic books published by Marvel Comics. The X-Men were created by writer-plotter Stan Lee and artist-plotter Jack Kirby, and were first published in 1963.
The X-Men are "mutants", a subspecies of humans who are born with superhuman abilities. They fight for peace and equality between normal humans and mutants in a world where antimutant bigotry is fierce and widespread.
[Source: Wikipedia]
Values for A-O can be found by confirming your solutions for the other puzzles in the series.
N AB CD.EFG W HIJ KL.MNO

The 25 caches of the X-men series are spread over a fairly wide area. The website cachetur.no has a useful route optimization tool, and may be of help to finders of this series. The site is free to use (it is donation supported). This YouTube video shows how cachetur can used to plan an efficient route. There’s even a trip template for the X-men caches that shows an optimized route, which can be copied to plan your own X-men trip (be sure to import the corrected coordinates into your trip).
Cachetur.no is a Geocaching® official API partner.