Valitos

Valitos is a wrathguard who during the Burning Legion's third invasion led several attacks.

He led an attack on Hearthglen, Azsuna, Peak of Serenity, defended a village loyal to Helya in Stormheim, and was encountered in Ravenholdt Manor, Dalaran and in Dreadscar Rift.

He was taken out by the champions of the class orders.

Objective of

 * Troops in Training (priest mission)
 * Troops in the Field (shaman mission)
 * Scrolls of Knowledge
 * Troops in the Field (warrior mission)
 * Troops in Training (warlock mission)
 * Wrath and Justice‎
 * The Big Bad Wolfe

Speculation
Since he was killed in Dreadscar Rift which is in the Twisting Nether, he may be killed for good.