Appearing in "Comes the Piranha"
- Professor Henry Croft (Only in flashback)
- Pacific Ocean
- Atlantic Ocean
Synopsis for "Comes the Piranha"
Namor evades Piranha and his pets and finds the potential antidote for his poisoned subjects. However, Piranha proves to be a persistent foe and gets his hands on the antidote. Fortunately, Namor recovers the antidote and battles through Piranha and his pets to escape. Piranha's wounds from the battle draw his pets in for the kill.