Kekek

Kekek, the Wolvar Orphan can be found on the small planter behind Orphan Matron Aria during Children's Week in the Eventide district of Dalaran. Three Wolvar Orphans are taunting the Oracle Orphan by playing keep-away with the Oracle's toy. He'll eventually grow up to be Elder Kekek and lead his people home.

Quests
He is also involved in the following chain of Children's Week quests, should players choose to adopt him for a week:

Future self
When Kekek is taken to the Bronze Dragonshrine, an older version of himself appears revealing that it's Kekek that becomes the leader of the Frenzyheart Tribe and leads them to their former home, where no gorlocs are found.

Gossip text quotes

 * Orcs always point and laugh at Kekek, but he get revenge one day.
 * You should stay away from walrus-men. They could pup-nap you.
 * Know what? If Kekek closes his eyes, you can't see him.
 * Kekek took big-tongue hatchling's favorite toy. Maybe it help you get to sleep at night.
 * Caught three chickens for lunch. Bet you couldn't catch any.
 * Kekek take you hunting. You be good bait.

Trivia

 * His name may be a play on Kek, the orcish word for "Lol". He claims that orcs laugh at him.