Triangry
From Jenny Everywhere Wiki
Triangries were the triangular subspecies of the Geometrons, the sentient two-dimensional geometrical shapes inhabiting the Euclidean Plane. (PROSE: Multiversal Mischief) They had the ability to breathe fire, although cold weather dampened this power, for which reason Triangries tended not to like the winter. (PROSE: The Time of the Toymaker)
When Tracker-764 left the Cupid Homeworld for the Euclidean Plane for his first mission as part of the Crew of the Copper-Colored Cupids, Colonel-028 advised him to stay away from Triangries and Octasers. (PROSE: The Mad Cupid of the Euclidean Plane)