Sierra McCool is the rival of Riley Daring and the love interest of Donny Rottweiller appearing in The Replacements. She has black hair and green eyes. Her main outfit consists of: a red long sleeved dress and white boots. She is voiced by Tara Strong. At her age, she is 14 years old.


  • Adriana McCool (Mother)
  • Chester McCool (Father)
  • Donny Rottweiller (Love Interest)


  1. Being nice to Donny
  2. Weaving her ways
  3. Going for the richness


  1. Her disgusted parts
  2. Being accused
  3. Ruining her life

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