(covers information from several alternate timelines)
In one possible timeline, the Zahl were a technologically advanced and generally benevolent humanoid species who, a generation prior to 2374, defeated the Krenim Imperium. The Zahl disbanded the Krenim fleet and retook the territories they had annexed. In 2374, two Zahl starships greeted the USS Voyager upon its arrival in their space. During the meeting, the entire Zahl civilization was erased from history by Annorax's weapon ship. The erasure of the Zahl achieved an unprecedented 98% Krenim restoration, although the Krenim colony on Kyana Prime was not restored. (VOY: "Year of Hell")
- No Zahl characters were ever assigned names in canon productions.