Brok

Anubisath Idol [Crush] [Sandstorm] [Deflection] Use Deflection first and when it comes off cd, keep Sandstorm up. I used crush, because of the better hit chance. Backup pet and leveling pet worked great.

He summons (In order):

1. 
   
2. Kali - Magic - Use a Dragonkin (I used Onyxian Whelpling)
3. 
   
4. Ashtail - Beast - Use a Mechanical (I used Lil XT)
5. 
   
6. Incinderous - Critter - Use a beast - (I used a Plains Monitor)
7. 
   

Kali opens with a spell to reduce hit (2 rounds). Wait until 3rd round for hard hitting moves with cool downs.

Incinderous hits like a freight train. Use Mechanical until dead to beat it down a little before bringing out your beast.

I just 2 pet'd Brok using:

Mechanical Pandaren Dragonling with [Breath] [Decoy] [Bombing Run]
and
Kun-Lai Runt with [Thrash] [Frost Shock] [Deep Freeze]

I put Decoy up right away, Bombing Run missed :(,and I used breath till Kali was dead. The dragonling died when Ashtail was less than 100 hp, 1 Thrash and done.

I used Frost Shock and Deep Freeze, in that order and put Incinderous on ice, even though they are weak on critters. This gave two shots of Thrash before Incinderous was fighting again.

Sadly I forgot to put my leveling pet in, and lost a good chance at large XP.
Both pets were Lv25 rares.

As of 5.4

Anubisath Idol [Crush] [Sandstorm] [Deflection] Use Deflection first and when it comes off cd, keep Sandstorm up. I used crush, because of the better hit chance. Backup pet and leveling pet worked great