IQ is a rare species of flower only known in the flying archipelago, Merveille. Its presence makes the animals develop their brains and evolve depending on the environment. This plant was later used by Dr. Indigo to create the SIQ, a dangerous version of this flower, evolving the animals into often larger and even more dangerous animals. IQ is also the only cure to the poisonous spores released by the Daft Green plant.
- "I.Q." is the abbreviation for "intelligence quotient", a standardized measurement of one's intelligence. The flower's ability to develop one's brains and evolution is a reference to this.
- Evolution – Wikipedia article on the process this plant stimulates.