The enigmatic water spirit who presents the protagonist with a series of trials to test his worth.

Plays a part in the assassination of someone important by distracting the guards so the team can take on the boss.

The charismatic character who likes to think he's the lead role. His specialty is alchemy and bombs.

EDIT: You just changed XD You know play the prince who ran away and aids the party by showing them secret passages under the cities.

Santa's Lead Elf Helper
She is wise, efficient, and kind. Although her temper can snap at a given moment through age she tempered it well enough you'll get a warning before she unleashes any Christmas wrath upon her foes (yes such a thing exist apparentlly. Probably made from the bitterness felt by those Christmas stooges)

Someone plans to have Santa Assassinated by poisoning the eggnog in the house of one of the good little girls. It nearly works but Santa is only incapacitated as she stopped him before he received a full dosage. While her underlings scrabble to manage the Holiday without their fat man she joins the party to take on the Three Stooges (haha) and get an antidote before Christmas Eve.
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I really liked what you came up with my previous avatar. Almost makes me want to change back :3

Funny...I had a dream like that once. Well Close enough. I was trying to get someone I loved inside a self-contained city. Since father wouldn't allow it I tried to sneak them through tunnels around the shield generator. It did not go well. I don't know if that person died or not.

the mysterious fortune teller who later turns out to have been all the mysterious characters they met along the way
he has helped them through the quest and now joins the party for his own intentions..

A badass street fighter that is thought to be female at first, but he reveals he is not only male, but also somewhat boy-crazy.

An apparently uncaring demon who harasses the party often, but later they find out the demon has a huge crush on one of the party members and has no idea how to correctly show it.

The loyal and wise cat elder who always leads you down the right path and gives you hints as to how to defeat the bad guys...(think Luna from Sailor Moon)...

The all powerfull guard to the last bosses gate!

A boss creature the heros kill and the evil wizard brings back to life and makes stronger.

That one evil boss character that's bored of being evil and decides to join the hero as the token evil team member.

The wise spirit of the forest who leads the hero to safety...

The shapeshifter who you have to fight in order to get her in the party.

A mid-boss from the final boss.

Nikko is the crazy samerai who won't help you until you promise to make him soup.

The villain that prefers to stay in the shadows and watch as their minions wreak havoc and chaos on the world around them.