I mean, c'mon. Whilst you are traveling on the surface, aside from Fi's thousands of percentages and Captain Obvious™ statements (don't get me wrong, I still love her) you don't hear much cheerful talk. Yes, you do hear some from the Kikwis, but that's only when they aren't shrieking in fear for their lives. Yes, you do hear some from the Mogmas, when they aren't being rude or talking about treasure. Yes, you do hear some from the ancient robots, when they aren't being depressing talking about how they miss their families and friends and etc. But this guy? Gorko? He's always excited about some new discovery he's made, happily telling Link about it whilst calling him "bud" and being overall very cheerful. He never makes a negative comment and never gets his spirits down. What's more, he gives useful information sometimes, and you see him in multiple areas of the surface aka Hyrule. He's just a nice, huggable character and I always looked forward to meeting him again.