The list
| Name | Description | Image |
|---|---|---|
| Andromedans[1] | Energy beings | |
| Dropa[2] | Diminutive humanoids | |
| Flatwoods monster[3][4] | Tall humanoid with a spade-shaped head[3] |  |
Greys[5][6]
|
Grey-skinned humanoids, usually small[6] |  |
| Hairy dwarfs[7][8] | Short, hairy humanoids | |
| Hopkinsville goblin[9] | Small, greenish-silver humanoids[10] |  |
| Little green men[11] | Diminutive green humanoids[11] |   |
| Nordic aliens[12][13] | Humans[14] |  |
| Reptilians[17] | Tall, scaly humanoids |  |
| Sirians[citation needed] | Humanoid/Aquatic | |
| Tall Whites[18] | Tall, pasty-white humanoids |