He only appears when the player uses at the Smoldering Brazier outside Satyrnaar.
Using the Secret Signal Powder creates a large explosion. Krokk will de-stealth and say one of the following:
- Krokk says: When this is over, you may want to brush up on your secrecy skills....
- Krokk says: Well, <class>, that was... subtle.
- Krokk says: You may wish to put some more signal powder next time. I'm not sure they could see that from Orgrimmar....
After a period of time, Krokk will re-stealth:
- Krokk says: I must resume my duties, <class>.
- Patch 4.0.3a (2010-11-23): Added