Quill would have definitely been more focused on the large, ugly bounty hunter trying to kill them. He would have tried to save his neck more than trying to save someone else. But right now his focus was on the blue haired woman gasping for air. It wasn't until Nikki pulled him down by his shirt that he just realized how close Zero was to slicing his head off. Nikki leapt in to action almost immediately after that, leaving Quill right there. He found that Zero was swinging at him again, and he quickly activated his rockets on his shoes to shoot him away from his range. He hit the alley way wall, but got up quickly. 

Everyone was on him, Rocket screaming and shooting, Groot also screaming, Drax laughing, and Nikki and Gamora screaming with rage. Quill couldn't go up against that guy. He was a good brawler, but when it came to actual hand-to-hand combat with a professional, it wasn't going to happen. What he did have were his blasters, and gadgets in his satchel. Peter rushed towards Zero, using his rockets to give him a small boost when he jumped on the large bounty hunter's back, and planted a device on the square of his back. Peter was swatted off, but Almost immediately two wires exploded from it, grabbing his arms by the wrist and pulling them back. Confused, Zero howled in rage, and in seconds he tore the wires apart. Soon everyone was thrown far away from him. Peter still had his blasters though!

But he didn't need to use them. Instead Nikki and Gamora worked together (weird I know) to inject the last of the tranquilizer in to the large man's throat. After a few seconds, the man fell to the floor. The whole crowd was breathing heavily, Peter pressed the button to get rid of his helmet. "Holy shit..." Rocket muttered. 

A crowd had formed to see what the whole fight was about. Everyone seemed just as shocked. "Yeah, that's right! The Guardians just took out ZERO! We can take on anything the galaxy throws at us!" Rocket yelled to the crowd. Quill pulled out from his bag a metallic sphere, and he lightly tossed it at Zero. a dozen cables sprang out, and wrapped themselves around the unconscious killer. If he showed any sign of restraint the cables were packed with enough electricity to power a small colony. Peter looked at Nikki, giving a nod to her. He was a man of his word. 

---------

"Throw him in the hostile room. We'll make a quick trip to Xandar to turn this clown in to Nova Corps." Quill said, walking up the ramp of the Milano as Groot carried Zero in to the ship. He stood at the entrance, waiting for the rest of the team to get in. "Told you we'd get the guy, Princess." Quill said to Nikki as she walked by, a smug smile on his face. He was happy that they were true to their word, happy to be getting money out of this, and more importantly to him, making sure that Nikki was safe after being on the run for so many years.