From the front, drohl drones appear to be awkward, bug-like heads, having high placed eyes on eyestalks and very low set mouths with stubby hands and feet placed nearby. It wouldn't be until their later appearances in the spin-off titles that their side profiles would be shown in-game, revealing most of their body to be similar to a snail shell. They are generally shades of purple. In the first two Monsters games, the drohls were classified as bugs, but later games in the series they are part of the Undead family.
Though some like to see them more as members of the animal kingdom, their enthusiastic attacking of humans has made sure they continue to be classified as monsters.
Both Drohl Drones and Drohl Diabolists appear in the Rimuldar chapter. Their movement speed is slow, but they have a long-range poisonous spit attack that flies in a high arc. Unlike in the original Dragon Quest, the two have identical attacks, with the Diabolist simply having higher stats.
One quest in the chapter requires you to retrieve an item called the Heart of Darkness from the Drohl Defiler, which is a much larger Drohl Drone roughly three times the size of the player. It fights the same way as the regular Drohls, but it spits in a three-way spread.
Drohl drone appears as a B-rank monster of the Undead family that can be scouted normally from any banner. It can participate in the Walking Corpse and King kelp's Battle Road and the Dragon Quest I event Battle Road as a party member.