Who is the Biggest fictional BAMF

Roland is a gunslinger from the long dead kingdom of Gilead. He's searching for the Dark Tower, the nexus of time and space. He has two specially made guns with sandalwood grips. From an early age he was trained to be a gunslinger. He's not the most imaginative, nor is he the most perfect...but he's the last one still alive. He's the youngest person ever to achieve the status of gunslinger. He did so by defeating his trainer with a hawk. Roland has taken down entire armies (human and not), towns, and laid supposedly the hottest chick this side of kingdom come (in his world).

Master Chief was taken when at the age of 6 from his home planet as part of the secret millitary SPARTAN project. He was brutally trained along with 150ish other children. When he was 6-7 years old, he led an operation to neutralize 6 millitary men armed with (I forgot the name) shock police batons. All he and his trainees had were rocks and surprise in the woods. He stole a dropship and got all of his fellow trainees back. The last person to enter the dropship was supposed to be left in the wilderness to die, so he made sure he went on last. He became squad leader. Later, in his teens, all the trainees underwent a risky surgery to physically augment them past what any normal human could be. Around half of the trainees didn't make it through the surgery. Soon after, he single-handedly killed 3 helljumpers with his bare hands. Master Chief wasn't the fastest, smartest, or strongest spartan. He was the most tenacious, bravest, and best. He's never gotten on anybody (his closest female friend is an AI).