Final answer:
Zoids are mechanical creatures from the Zoids franchise, distinct from Transformers, Pokémon, and Digimon, which are separate franchises with their own types of characters. Therefore, the correct option is D.
Step-by-step explanation:
The creatures in the last group that are known as Zoids are from the Zoids franchise. Zoids are mechanical creatures that appear in the anime and toy line of the same name. They are not to be confused with Transformers, which are also robots that can transform into vehicles and other structures, the creatures known as Pokémon from the Pokémon series, or Digimon, which are digital monsters from the Digimon franchise. The Zoids series features large mechanical life forms based on various animals like tigers and dinosaurs, which can be piloted by humans.