Heavy Murloc Egg



Grunty the Murloc Marine is a companion that was given out to attendees of BlizzCon 2009, purchasers of the DirecTV pay-per-view of the event, and purchasers of the internet streamed video of the event. This baby murloc wears armor and wields a gauss rifle, which he'll occasionally fire around at perceived enemies.

Source
Grunty will be delivered by in-game mail to every character on a player's Battle.net account that has been attached to a Grunty code, much like collector's edition companions. If you merged your World of Warcraft account with your Battle.net account after purchasing the stream, you will not get the pet.

Accompanying letter
The letter delivered with Grunty is from Master Handler Sylvester:

Previously, the letter's subject was "Special Delivery".

Pet Journal
''Only the rarest of murlocs is able to successfully cross dimensional barriers. Fewer still return with the kind of advanced armor and weaponry possessed by Grunty.''

In Heroes of the Storm



 * was a hero in early versions of Heroes of the Storm (then known as Blizzard DOTA). His description read: "Grunty was sucked into a magic vortex and whipped across the dimensions when he battled a 25-man raid one Tuesday night. Deposited in the Koprulu sector, Grunty often finds himself among the zerg as murlocs are the only creatures the zerg have ever refused to infest."
 * In Heroes of the Storm, has a skin named "Grunty Murky."

Notes and trivia

 * If Grunty gets near a Zergling or Zeradar companion, he'll either kill them or be killed by them.
 * The pet battle abilities Gauss Rifle and Stimpack are only available to Grunty. U-238 Rounds was originally only available to Grunty as well, but a few other pets with this ability have since been added.
 * He can assist the player in Failoc-alypse by dropping nuclear bombs.