| NAME | LEVEL | TYPE | GROUP |
| Sabredramon | Champion | Vaccine | Bird |
| SabreLeomon | Mega | Data | Ancient Animal |
| Sageterimon | Armour | ||
| Sakuyamon | Ultimate | ||
| Salamon | Rookie | Vaccine | Mammal |
| SandYanmamon | Champion | Data | Insectoid |
| Scorpiomon (Anomalocarimon) | Ultimate | Data | Crustacean |
| Scorpiomon (the real one) | Ultimate | ||
| SeaDramon | Champion | Data | Sea Animal |
| Seahomon | Armour | ||
| Searchmon | Armour | ||
| Sepikmon | Armour | ||
| Sethmon | Armour | Vaccine | |
| Shadramon | Armour | ||
| Shakkoumon | Ultimate | Mutant | |
| Sharmamon | Rookie | Virus | Evil |
| Sheepmon | Armour | ||
| Shellmon | Champion | Data | Sea Animal |
| ShellNumemon | Champion | Virus | Crustacean |
| ShimaUnimon | Champion | Vaccine | Mythical Animal |
| ShogunGekomon | Ultimate | Virus | Amphibian |
| Shurimon | Armour | Data | Mutant |
| SkullGreymon | Ultimate | Virus | Skeleton |
| SkullMammothmon | Mega | Vaccine | Ghost |
| SkullMeramon | Ultimate | Data | Fire |
| SkullSatamon | Ultimate | Virus | Ghost |
| Snimon | Champion | Vaccine | Insectoid |
| SnowAgumon | Rookie | Vaccine | Reptile |
| SnowGoburimon | Rookie | Virus | Evil |
| Sorcerymon | Champion | Demon Man | |
| Soulmon | Champion | Virus | Ghost |
| Starmon | Champion | Data | Mutant |
| Stegomon | Armour | Dinosaur | |
| Stingmon | Champion | Virus | Insectoid |
| Submarimon | Armour | Vaccine | Sea Animal |
| Sukamon | Champion | Virus | Mutant |
| Super Starmon | Ultimate | ||
| Swanmon | Armour | ||
| Syakomon | Rookie | Virus | Crustacean |
| Sylphimon | Ultimate |