Goku was quite furious with you and Frieza, he just seemed determined to get rid of the companion who was putting him in trouble. For a moment, when he was able to get Frieza far enough away, he went after you, holding your arm so tightly that you couldn't escape: He broke your arm, then dragged you across the ground while he flew, causing you to receive wounds all over your body, and then He hit you in the face so many times that you could hardly breathe. The blows also went directly to other parts of your body. You couldn't resist it and you were left in a deplorable state.

I knew you were a demon, in addition to knowing that you could be cured but it would take hours, days and even months. He just looked at you seriously, thinking about using you as a conduit for healing his wounds and an option to get out of Namek.

"A demon like you couldn't stand up to me... even if years pass, but I will give you an option that if you don't accept I will let you die along with your leader and this planet..."

He said with that voice that was scary when he showed seriousness, it was scary but Goku waited to hear your answer and if you accepted his option which would be: cure him and help him escape.