This is the list of sub-characters that appeared in AO.
| Name | Image | Appearances | Special |
|---|---|---|---|
| Brik | 
|
AO 11 | can talk and make clones of itself |
| Mard | 
|
AO 27 | can talk |
| Dave | 
|
AO 29 (special appearance) | talking worm |
| Sans | 
|
AO 30 | you should've known it |
| Red & Cheeseman |  
|
AO 31 | possibly could talk but didnt |