Cosmic Powers Fan Fiction - Fan fiction starring Silver Surfer, Adam Warlock, Quasar, Galactus, Thanos, and other cosmic characters of the Marvel Universe. eX -- An Online Fan Fiction Novel - An online novel, posted in episodic form, featuring the Marvel Comics characters called the X-Men. Ultraverse: A New Twist - Fan fiction based on the Malibu Comics characters in Marvel's Ultraverse. Generation X Fan Fiction - Contains Generation X fan fiction written by Francisco Charrua. the arcHive - Fan fiction and art. Firebird's Marvel Fanfiction - Marvel Fanfiction by various authors.