Marvel
| Name | Super Name | Code | Actions |
|---|---|---|---|
| Sligguth | Sligguth | Sliggu… | Show |
| Sleepwalker | Sleepwalker | Sleepw… | Show |
| Sleeper | Sleeper | Sleeper | Show |
| Slaymaster | Slaymaster | Slayma… | Show |
| Slash | Slash | Slash | Show |
| Slapstick | Slapstick | Slapst… | Show |
| Slab | Slab | Slab | Show |
| Skull the Slayer | Skull the Slayer | Skull-… | Show |
| Skullfire | Skullfire | Skullf… | Show |
| Skullbuster | Skullbuster | Skullb… | Show |
| Skrullian Skymaster | Skrullian Skymaster | Skrull… | Show |
| Skornn | Skornn | Skornn | Show |
| Skin | Skin | Skin | Show |
| Skids | Skids | Skids | Show |
| Skein | Skein | Skein | Show |
| Skaar | Skaar | Skaar | Show |
| Siryn | Siryn | Siryn | Show |
| Sirocco | Sirocco | Sirocco | Show |
| Sin-Eater | Sin-Eater | Sin-Ea… | Show |
| Sin | Sin | Sin | Show |