Bosaal's species were a humanoid species who inhabited the Delta Quadrant.
In appearance, this species possessed a bilateral ridge running vertically along the front of their heads to their chest. (VOY: "The Void")
The final draft of the script describes this species as "a formidable-looking new alien."
The design of Bosaal's species has a familiar appearance previously seen in the design of the Tak Tak
and Fallit Kot