Allright, did they hire John C. Reilly to do the 3rd narration?
Episode 8- Cities (last episode):
Whether it's the Canadian Elk-cop, American cockroach hunter, whoever is talking there is always the same narrator covering those third-party voices.
I swear this is John C. Reilly talking. (The sensitive guy from 'Legend of Ron Burgundy ' and many other comedies). He has that exactly same character in his voice!