The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Samurai Shodown 5 Special (0 members)
- Samurai Shodown Tenka (0 members)
- Samurai Shodown characters (14 members)
- Samurai Shodown games (2 members)
- Samurai Showdown 1 (0 members)
- Samus (1 member)
- Sarah Bryant (2 members)
- Sareena (4 members)
- Sasquatch (10 members)
- Saturn (1 member)
- Scorpion (10 members)
- Scorpion (Kameo) (1 member)
- Scythe (12 members)
- Sean (52 members)
- Sektor (8 members)
- Sektor: (1 member)
- Sektor (Kameo) (5 members)
- Sengoku Basara X (13 members)
- Sentinel (28 members)
- Sergei Dragunov (3 members)
- Series (10 members)
- Servbot (4 members)
- Seth (1 member)
- Shadow (1 member)
- Shadow Geist (1 member)
- Shadow Lady (7 members)
- Shang Tsung (3 members)
- Sharon (1 member)
- She-Hulk (43 members)
- Sheik (2 members)
- Shen Woo (40 members)
- Shermie (0 members)
- Shijou Saikyo no Teishi Kenichi (1 member)
- Shiki (1 member)
- Shin Akuma (1 member)
- Shingo Yabuki (1 member)
- Shoma Sawamura (53 members)
- Shotokan Move (0 members)
- Shujinko (5 members)
- Shuma-Gorath (32 members)
- Shuma Gorath (2 members)
- Sie Kensou (2 members)
- Sigma (2 members)
- Sindel (2 members)
- Sittara (1 member)
- Skullgirls (8 members)
- Skullomania (2 members)
- Smoke (2 members)
- Sodom (157 members)
- Sokaku Mochizuki (1 member)