A closer look at the pets of 6.2.2

As mentioned before, the patch this week is not only bringing flying but also introduces a few news to pet battles. I want to take a closer look at what's coming in terms of new pets!
Here is all the information about the new pets being introduced:

1. Drops from new rare mobs:

Energized Manafiend - Drops off the new rare mob Rukdug in the Highmaul area in Nagrand (not in the instance!)
Empowered Manafiend - Drops off the new rare mob Pugg in the Highmaul area in Nagrand (not in the instance!)
Empyreal Manafiend - Drops off the new rare mob Guk in the Highmaul area in Nagrand (not in the instance!)

2. New holiday event pets:

Three new pets that are most likely available from the Hallows End event.
Ghastly Rat
Ghost Maggot
Spectral Spinner

And one for Winters Veil:
Grumpling

3. Shop / Collectors Edition / BlizzCon pets:

Murkidan - Murloc-Illidan who comes as a reward for BlizzCon 2015 (or virtual ticket holders!)
Zeradar - A mini-archon rewarded for owning the Starcraft 2 - Legacy of the Void Collectors Edition
Nibbles - "Cute" little bugger who comes with the Legion Collectors Edition
Brightpaw - A mystic runesaber kitten fitting to the mount, coming to the pet shop at a later time.