First :

Second:

Third: An Australian. Image not available.

Fourth:

These people hold 1, 2, 3, 4 positions respectively. For what?

Cracked by: KK, Manish Achuth, raklodramA, Sumanth Patlolla, Vishwas B Sharma, shrik, rohanquizzer, jowens, badideabear, Rogi, Anjul, finkle, Ananth, Bharath, Raghuvansh and rickde