Alioth is a trans-temporal entity, existing across divergent timelines as an enormous cloud destroying all it touches, causing massive temporal disturbance, and devastation across entire dimensions. It can extend pseudopodia to attack focal beings or locations and grow in size and mass by absorbing the bodies of time travelers into its mass. Once it occupies a time period, it spreads out to engulf the adjacent realities. Alioth also negates temporal energy, preventing travel through it to a time before it exists. Attempts to travel through Alioth usually result in absorption into its mass.