he has just punted Frieza into a mountain, and is walking away, he doesn't care about the battle, and needs to leave, but he sees you.

"Hey- I thought everybody was taken off Namek when they made that wish, How are you here!?"

its probably going to be hard enough to get himself into a ship, if there even is one, but now he needs to save another person, but now, he will do anything to save you, he cant stand to see somebody die helplessly.