Zarniwoop Vann Harl - Rob McKenna

Described by the scientific community in the novel So Long, and Thanks for All the Fish as a "Quasi Supernormal Incremental Precipitation Inducer," Rob McKenna is an ordinary lorry driver who can never get away from rain and he has a log-book showing that it has rained on him every day, anywhere that he has ever been, to prove it. Arthur suggests that he could show the diary to someone, which Rob does, making the media deem him a 'Rain God' (something which he actually is) for the clouds want "to be near him, to love him, to cherish him and to water him". This windfall gives him a lucrative career, taking money from resorts and similar places in exchange for not going there. Rob McKenna is, in So Long, and Thanks for All the Fish, a "miserable bastard and he knew it because he'd had a lot of people point it out to him...he disliked...everyone." In the book, he is shown only twice, first when he splashes Arthur Dent, who is hitchhiking in a normal environment, on the side of a desolate road in England, for the first time on record. Second when Arthur meets him in a cafe, in "Thundercloud Corner," Rob McKenna's personal spot, which most people wouldn't venture near. But McKenna is mentioned continuously throughout the book, especially when he is hailed by the media as a "Rain God," though not in those terms. In the radio show, however, he picks Arthur up instead of ignoring him, and meets him again later, after he acquired his fame. He then has a much more positive attitude towards Life, the Universe, and Everything, and is thrilled to meet Arthur again. He explains, as the narrator does in the book, that "Quasi Supernormal Incremental Precipitation Inducer" means, in layman's terms, a Rain God, but the media couldn't call him simply that, because it would suggest that the ordinary people knew something they didn't.

He appears in fit the nineteenth of the radio series, fit the twentieth of the radio series and fit the twenty-first of the radio series and is played by Bill Paterson, who also played one of the Arcturan Megafreighter crew in fit the seventh of the radio series.

Rob McKenna is assumed to be English because that is where he is always driving round, trying to escape the elements, and where, thanks to the summer resorts who've heard of him, he will be confined until his death in the Quintissential Phase; but in the Quandary Phase, he has a Scottish-sounding voice.