You remind me of an important female character in the storyline. You'd be recognizable at first but not added within the Hero's party until a later trigger event. Like you'd be a powerful reincarnation of a spirit/goddess living a normal life until the main villain shows up and uses you. Something like that.

A demon who became interested in the main protagonist after a fight with him/her and his/her party and decided to tag along and became their guide of sorts while they were wandering around in hell looking for the boss to fight.

You are the boss from an island the main character visits on their quest. You control the volcano located at the center of the island and require regular sacrifices from the village in order to keep you from erupting it.

the first role that comes to mind is a witch, probably evil, who is hiding away in some forbidden forest in some random place. your party stumbles upon her abode at random and she offers little bits of clues and hints on what to do next or random treasures... for a price

Generic atmosphere decoration in a horror video game; first-person shooter game in a zombie-apocalypse world where the vultures are everywhere, perched on half-rotted bodies or flying around in the sky ominously in the background while the protagonist travels from place to place.

You are a guard at one of the temples the protagonists must visit. Whether or not you let them in depends on if they're willing to do a little favor in return.

You'd be the villian that you think is super easy to defeat but really is majorly annoyingly tough. (That was a lame sentance.) Or one of the pranksters that never gets caught (depends on the game xD)

You're the badass/sexy female fighter in a fantasy rpg.

You would be one of the female characters in a fighting game.

actually, your avi reminds me of one of the maps in left 4 dead 2 with all the tall grass and me not being able to see the zombies until i run straight into them.

so you'd be an antagonist in a video game based off of that.

or you could be in one of those video games that have really strange twists that make everything interesting and you could be a good guy.

You'd be the final boss queen, the Oceanic Goddess that has been causing all of the chaos throughout the game.

Hm. You would be an NPC that gives a daily quest to slay 20 of those pesky insects around you.

You'd probably be a powerful boss that guards the entrance to the main villain's lair. You'd be pretty hard to defeat because of your magic-fueled healing.

You're one of the checkpoint bosses the protagonist party has to defeat in order to continue on to the next island/map! Very powerful and immune to most attacks, but vulnerable when attacked from the blind side.

You are the god that sends the protagonist on his quests and guides him. Perhaps even narrating the story with your all seeing knowledge

You're the reluctant protagonist, off to slay more zombies!

The oddly well-dressed peasant who comes to the protagonist party for help, requesting their aid in saving his girlfriend from evil monsters in an evil castle in the woods. When the protagonist party accepts and arrives at the castle to save the girl, it turns out that he was the 'evil monster' in the castle and has been luring unsuspecting adventurers into helping and then robbing them blind before using his powers to turn them into inanimate pieces of decoration within his castle.

If the protagonist party chooses their words wisely, they may be able to unlock a secret achievement and he will join them in their future quests.

You are the one who is either giving the missions to the knight or you are the one that is trying to be saved... it can go either way since you are royalty....

You are an NCP villager in one of the towns the protagonists visit. If they complete simple tasks for you, you'll give them candy and other small, but sometimes useful, items.

Hmmm An opera singer?

The ice queen who seems nice but is secretly the big evil boss

An Grant Theft Auto NPC (quest giver).

You look like a benevolent deity that the main characters often go to for help. You got in trouble once, but since the heroes helped you out you've been giving them advice and upgraded their weapons/powers whenever they needed.

One of those characters that joins the protagonist's party briefly, for one map or so, like in Kingdom Hearts, with each world having a new companion. You'd probably be slated for forested regions.

You would be a companion character in some sort of fantasy game. Likely one that takes place in a more urban setting. You use magic based on sound.