Hulk by Cates & Ottley Omnibus

Bruce Banner thinks he finally has total control of his emerald alter ego - but unexpected variables can arise at any time, and there are some things even his brilliant mind cannot imagine. As Bruce hurtles deep into outer space on a dangerous quest, he's about to find out that the Hulk isn't alone! When mysterious circumstances bring him into conflict with Thor, can a more-powerful-than-ever God of Thunder triumph against a Bruce Banner who can now control his rage? And will Iron Man regret coming between these two titans? Then, as Banner's space odyssey continues, an entire planet of Hulk-like creatures may offer the paradise he's been looking for - or a new nightmare waiting to unfold! Get ready to meet Titan, the Hulk's Hulk!

Collecting HULK (2021) #1-14, HULK VS. THOR: BANNER OF WAR ALPHA, THOR (2020) #26, and material from FREE COMIC BOOK DAY 2021: AVENGERS/HULK and THOR (2020) #25.