Possible Clues:

• Wonder Woman, e.g
• A passion about weightlifting ending in mutation of fierce women
• She was a great fighter with Ian on the river
• Like capybaras and piranhas
• A person patrolling a depleted area, one like a rainforest
• Like a river? A chap carries a book of maps on one
• Like piranhas and electric eels
• Of S. American region
• Like Penthesilea's description of great river