Anyone who's trying this show without having read the books, and is getting overwhelmed with all the people being thrown at you, here's a handy cheat to keep them straight:
Rand - Harry
Mat - Ron
Perrin - Neville
Egwene - Hermione
Nynaeve - McGonnigall
The Dark One - Voldemort
Moiraine - Dumbledore
Red Ajah - Ministry of Magic
Blue Ajah - Hogwarts Staff
Green Ajah - Aurors
Black Ajah - Death Eaters
Fades - Dementors
Thom - Hagrid