The bard who joins your part for just a bit at the beginning and seems completely useless, then disappears for half the game, only to rejoin your party before the final dungeon, in a much more powerful form.

the main hero!

A witch who for most of the game, you're not sure if she's evil or good.

Uhh possibly a secret female warrior that joins you in the later half of the game and kicks arse? xD

An NPC trainer early game who teaches you magic. When you fight him outside of training you gain access to crafting custom spells. But usually isn't possible to beat him til mid-game.

In this video game, there are four worlds representing the basic elements. Jurinjo is the prince of the land of air.

An assassin/spy working undercover in a club, who keeps a close eye out on the protagonist on orders from the leader of their organization, and eventually follows him out one night to warn him of an impending ambush. They join the team after the protag makes an unpredicted turn and walks right into the trap, and the assassin throws any and all disguise protocols out the window to to take out the attackers almost before the protag notices they're there.

...I almost want to draw this thing out now.

I think of the final fantasy's Dragoon class.

The NPC you go to who revives fallen party members, ... for a price.

The fallen white mage (one of the bosses) who despises humankind, having been betrayed and left to die by whom they had once considered to be friends.

That super powerful player in an MMO that's full of himself in a more smug than loud way that possibly grates your nerves even more. Then it just gets worse as he hit on various female avatars then blatantly tries to buy them with rares and gold.

A town npc. Probably owns a shop.

Hmm. In a very secluded place, but will sell you space and time magic when you get to them. x3

An admin who has been with the game as a player since the near beginning. They're wise, professional, and yet somehow easy to get along with an open up to. Usually you'll run into him a town or two over from the starting place. Where players have the basics down and trying to immerse themselves in the world or learning to specialize more in their class roles.

An assassin-type character who wears his hod to hide the fact that he is indeed not human.

Damn ears won't stay under the hood xD

That spooky character the party assumes is the bad guy responsible for the recent happenings in the palace but turns out to actually be the prince conspiring to take the throne and willing to kill his whole family to do it.