I
- Imperious (see Villains in Power Rangers Mystic Force)
- Impus (see Prince Impus/Olympius, Villains in Power Rangers Lightspeed Rescue)
- Itassis (see Villains in Power Rangers Mystic Force)
- Ivan Ooze (see Villains in Mighty Morphin Power Rangers)
Read more about this topic: List Of Power Rangers Characters