The Baneling Nest is a grotesque, organic structure resembling a pulsating sac with a thick, fleshy exterior covered in veiny textures and occasional oozing bio-goo. Its form is asymmetrical, with bulbous protrusions and a central orifice that periodically opens to release Banelings. The surface features a mix of smooth, membrane-like areas and rough, chitinous plates, colored in deep purples and greens with glowing yellow accents indicating its Zerg origin. Distinctive design elements include bioluminescent nodes that pulse rhythmically, signaling its active state.