Title is self explanatory. What character is popping up in the most books?
Wall of Fame/Shame
[Old Man Logan:7] Phoenix Ressurection, X-Men Gold, Astonishing X-Men, Weapon X, Old Man Logan, Old Man Hawkeye, Deadpool vs. Old Man Logan
[Ms. Marvel:3] Secret Warriors, Champions, and her own solo.
[Rogue:3(+1)] Avengers: No Surrender, Astonishing X-Men, Rogue and Gambit (Possibly X-Men Red)
[Spider-Man:4(+1)] Spider-Men II, solo series, Spider-Man and Deadpool, Avengers (Depending on how you count, Renew Your Vows)
[Jean Grey:3]X-Men Red, Solo Series, X-Men Blue