Mawasi

From Memory Alpha, the free Star Trek reference.

In one possible timeline, the Mawasi are a spacefaring species native to a region of space near the Krenim Imperium. In 2374, two Mawasi cruisers, and three Nihydron warships joined the USS Voyager in its attack on the Krenim weapon ship. Tuvok, Neelix, and Seven of Nine were assigned to work with the Mawasi to implement temporal shields aboard their ships. (VOY: "Year of Hell, Part II")

The status of the Mawasi after the timeline was returned to normal is unknown.