Beholder Zombie
Source: Monster Manual (2024) p. 347

Zombies animated from the corpses of beholders retain some use of those monsters’ magical eyestalks. These hovering corpses rely on their magic to destroy impediments and paralyze foes, allowing them to savage foes with their rotting maws.
Magic-using beholders typically raise these abominations from the corpses of defeated rivals.
Zombies
Relentless Reanimated Corpses
- Habitat. Planar (Shadowfell), Underdark, Urban
- Treasure. None
Zombies are unthinking, reanimated corpses, often gruesomely marred by decay and lethal traumas. They serve whatever supernatural force animates them—typically evil necromancers or fiendish spirits. Zombies are relentless, merciless, and resilient, and their dead flesh can carry on even after suffering grievous wounds. While they can follow simple orders, they rely on primal drives rather than thought. They fulfill commands by working tirelessly or battering through foes, but they are easily stymied by barriers or unexpected circumstances.
Zombies are usually created from Humanoid corpses, but the remains of other creatures can also become zombies. Such monstrous zombies might possess the strength they had in life or a measure of their supernatural abilities, but they employ such abilities haphazardly at best.
A quote from Account of the Night of the Walking Dead
Then, by a spectacular crack of lightning, the figures came into view, moving slowly toward the village. Over driving winds a voice cried out, “The dead come for Marais d’Tarascon! An army of the walking dead!”