On a tiny island somewhere off the coast, you are wandering around in a forest, looking for monsters to kill. Suddenly, you run into a strange worm, that sucks up your entire party! However, you didn't die, and instead you find yourself in an odd cave. After looking around for a bit, you run into a strangely dressed person. You can't quite make out if it's a man or a woman, and it appears to be a very old person. Your conversation goes like this:
Strange person: "Hello, might I ask who you are?"
You: "We're [name], and we're trying to save the world, but we got lost."
Strange person: "Saving the world? That sounds like and interesting thing to do. My name is Gogo, and I will now join you on your quest to save the world."
I love Gogo. It has a somewhat silly introduction, but its outfit looks great, and it can do everything all your other characters can! You love Mash's deathblow ability? Gogo can do it. Or Edgar's machine command? No problem, Gogo knows how to use a chainsaw. Or maybe you have messed up your esper training a little and spread out spells over too many characters? Don't worry, Gogo knows them all.
This Gogo is from Final Fantasy VI.