Comic fans are used to waiting for the answers to big questions. But in the case of "Ultimate X," the February-debuting Ultimate Comics series that promises to revisit the Ultimate U's mutant corner, the answers may only be turning up more questions.

Starting last week, Marvel Comics began releasing teaser images for the Jeph Loeb-penned book by series artist Arthur Adams. Each new version of the image revealed another character who would be taking part in the series from a Wolverine-clawed youth to a rough-hewn winged wonder to a girl on fire. Today, the company released the fifth an final teaser for the series (seen at right) featuring what appears to be a Hulk-like character backing up the new crew.

Unlike many of the mutant characters in the Ultimate Universe, the Hulk survived the events of Loeb's "Ultimatum" series, so it's unclear whether this gray-skinned goliath is Bruce Banner or another gamma-irradiated guy. In fact, despite passing similarities to characters ranging from Ultimate Wolverine and Sabertooth to Fantastic Four supporting character Frankie Raye, there is no definitive word on whether the cast of "Ultimate X" are new versions of familiar heroes, entirely new characters or something else all together.

When the series was announced last October, Loeb told CBR, "This isn't a book about mutants, superheroes or anything you're expecting. It's about life in the Ultimate U after a devastating event, and the hard choices we make for the greater good." And while the writer named no characters in the series, he noted that Wolverine is truly dead before adding, "I will say that, when #1 hits, it is very reader friendly. It's an entry point that's designed to get you hooked."

"Ultimate X" #1 hits comic shops on February 3, 2010.

ULTIMATE COMICS X #1

Written by JEPH LOEB

Pencils & Cover by ART ADAMS

Villain Variant Cover by ART ADAMS

Special Variant by ART ADAMS

Special Variant by TBA

Spoiler Line-up Variant by ART ADAMS

Who-or what-is Ultimate X? The answers and even more secrets arrive in the all new ULTIMATE X ongoing bi-monthly series from the superstar dream team of JEPH LOEB and ART ADAMS. Wolverine is dead. Captain America is a fugitive. The Fantastic Four disbanded. Lives have been destroyed and nothing can ever be the same-is there any hope left? It all begins with a search for a brand new character whose identity will leave jaws on the floor and change the Ultimate Universe forever.

32 PGS./Rated T+ ...$3.99