From DariaWiki

Danny was a sad-sack shut-in who Quinn Morgendorffer managed to con into buying long-distance phone cards. He was voiced by Geoffrey Arend.

In "Cafe Disaffecto", this nervous man was steered into buying cards by Quinn roleplaying they were boyfriend and girlfriend. The fact a fourteen year old did this to a property-owning adult man is worrying.

In "Love is a Way Too Many Splendored Thing", Quinn says: "He bought a lot of long distance phone cards, but how can you take a guy who is such a bad actor seriously?"