He's either DEA or Gus' man who will take Walt out once they cook $3m worth of Blue Sky, now Gus has to feed Hank to the killer twins to keep Walt cooking, amazing.
Anyone else think Hank or the twins might not survive the confrontation that's coming? Hank is a main character but might have a complete nervous breakdown & go off the edge soon. Gus might go away too, you could see the mortal fear in his eyes when the twins sat at Hermanos Pollos (Chicken Bros.) all day & later at the desert meeting.
Adios to the RV, goodbye magic bus!