What superheroes are made of

A list of 5 words by arby.

  • unobtainiumwas added by arby and appears on 11 lists
  • vibraniumwas added by arby and appears on just this list
  • adamantiumwas added by arby and appears on 12 lists
  • kryptonitewas added by arby and appears on 14 lists
  • phlebotinumwas added by arby and appears on 3 lists