If you're going for straight out RPG spoof, then there's the big sword, the magical bracelet, the memory loss, the adoption, the quirky comic relief animal, the big eyes, big shoes, big hair... ... ...
On the other hand, we could avoid general parody, and try for something else...
For instance, what if our main character was an arrogant twit whom makes progress through the game almost entirely through the help of his comrades, but takes credit for everything and is always passive-aggressively attacking his teamates to inflate his ego?
Or we could go for the standard odd-man-out normal, average guy catalyst to play off of all the wacky characters.