No Ultra-warrior can survive on Earth indefinitely. Each one has adopted a human form, either by merging with one (or, in Ultraman Ace's case, two) humans, or by creating their own human form. In all but one case, though, some mechanism or device was required to effect the change from human to ultra form; Ultraman Jack was the one consistent exception, although Ultraseven and Ultraman Dyna were able to effect the change independently on rare occasions.
The list of devices are as varied as the heroes themselves. The list is:
| Ultra-hero | Device |
|---|---|
| Ultraman | Beta Capsule |
| Zoffy | (unknown) |
| Ultraseven | Ultra Eye (a.k.a. Task Mask) |
| Ultraman Jack | (none) |
| Ultraman Ace | Ultra Rings |
| Ultra Father | (unknown) |
| Ultraman Taro | Ultra Badge |
| Ultra Mother | (unknown) |
| Ultraman Leo | Leo Ring |
| Astra | (unknown) |
| Ultraman King | (unknown) |
| Ultraman Jonias | Beam Flasher |
| Ultraman 80 | Bright Stick |
| Yullian | Bright Bracelet |
| Ultraman Scott | none (transformed in times of danger) |
| Ultrawoman Beth | |
| Ultraman Chuck | |
| Ultraman Great | Delta Plasma Pendant |
| Ultraman Neos | (unknown) |
| Ultraseven 21 | (unknown) |
| Ultraman Zearth | Electric Toothbrush |
| Ultraman Tiga | Spark Lens |
| Ultraman Dyna | Re-Flasher |
| Ultraman Gaia | Esplender |
| Ultraman Agul | Agulator |