The Necromorph Tumor is a grotesque, organic mass with a pulsating, veined surface that appears both alive and necrotic. Its shape is irregular and asymmetrical, with tendrils and fleshy protrusions that suggest rapid, uncontrolled growth. The tumor's colors range from sickly greens and purples to deep reds, with areas of exposed muscle and bone, giving it a highly detailed and horrifying appearance. The surface is wet and glistening, with occasional luminescent spots that hint at the alien infection within.