I wonder who the new characters in the trailer. Hopefully, they get some character development.

These are the few characters that stick out in my mind.

Human Martial Artist - Male, adult, brown hair. Probably the boyfriend of the female human spiritualist, as they looked liked they were going to kiss before being interupted.
Human Spiritualist - Female, adult, purple hair. Probably the girlfriend of the human martial artist.
Human Martial Artist(?) - Male, young, brown hair. Probably the sister of the female human spiritualist, as he teases her when she's about to kiss the adult human martial artist.

Dragon Clan Namek - Adult.
Warrior Clan Namek - Young.

I don't think they're actually characters, they're probably just supposed to represent the players.

That's what I was thinking.
Most MMO's do that with their trailers, even when its an MMO based off a big franchise.

I think they might be archetypes. Characters trotted out every time they need to explain something with the game mechanics pertaining to particular class, like a tutorial type. Though I would like to see some character development with them.

Maybe they'll appear in the manual or something.