Scallywag
Scaly Joe
Scamp
Scampennelli
Scamper
Scamper Baby
Scampi
Scamps
Scampurr
Scandalous
Scar (from The Lion King)
Scaramouche (a character in the play "Scaramouche")
Scarborough
Scardey
Scardie-Cat
Scare Muche
Scaredie
Scaredy
Scaredy Cat
Scarface
Scarlet
Scarlett
Scarlett And Rhett
Scarsborough the Fair
Scary
Scary Mary
Scat (as in Scat-Cat)
Scatter
Schatzie
Scheherazade