- Spiderman (2099)
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- Spike
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- Spike (PONY.MOV)
- Spike (The Land Before Time)
- Spike (Tom and Jerry)
- Spikey
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- Spin the Talking Globe
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- Splinter and Knothead Woodpecker
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- Spunky
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- Squeeks the Mouse
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- Squirrel (Hi Hi Puffy AmiYumi)
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- Squirrel (Rudolph the Red-Nosed Reindeer)
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- Squirrel (Teen Titans Go!)
- Squirrel (The Powerpuff Girls)
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- Squirrelley
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- Squirtle
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- Starchy
- Stardust (Scooby-Doo! and WWE: Curse of the Speed Demon)
- Starfire
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- Stegz
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- Stephanie McMahon
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- Stephanie Putty
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- Steve Ball
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- Steve Williams
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- Steven Beale
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- Stimpy
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- Stylado
- Subject Delta
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- Sue Ellen Armstrong
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- Suzaku Kururugi
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- Suzuko Yamazaki
- Suzy (Lucy the Dinosaur)
- Sven
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- Sven (Happy Feet Two)
- Swablu
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- Swampy
- Swan (HooplaKidz)
- Swan (Kidsongs)
- Swan (Super Why)
- Sway3PO and B2D2
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