Quote1 You know, I just never get tired of having my credentials questioned. Gives me a warm, squishy feeling all over.[1] Quote2
-- Doctor Castillo

Doctor Castillo works as a medical doctor specializing in metahumans, mutants, and other superhumans. She maintains a low profile and operates in New York City. She has worked with Spider-Man, Madrox the Multiple Man and X-Factor Investigations.

Doctor Castillo has helped X-Factor Investigations with patching up Siryn after she was nearly beaten to death,[1] performing a prenatal work up on Wolfsbane and her unborn baby,[3] and treating Strong Guy at Saint Vincent's Hospital after he was shot in the chest by Ballistique.[4]



  • Medical doctorate degree and licensing with specialities in metahumans, mutants, and other superhumans.

Strength level


  • Prescription glasses


  • "Castillo Pet Shampoo" van
Castillo Pet Shampoo van

Castillo Pet Shampoo van

Discover and Discuss


  1. 1.0 1.1 X-Factor Vol 3 #6
  2. First name not revealed
  3. X-Factor #210
  4. X-Factor #217#218

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