Atlantis Attacks is the twenty-first episode of Fantastic Four: World's Greatest Heroes.It was first aired on September 1, 2007.
Namor the Sub-Mariner returns and this time he asks the Fantastic Four to help him fight against a barbarian named Attuma who has made the people of Atlantis overthrow him. Jhonny, who is afraid of water, said he has to stay back so Reed, Susan, Ben and Namor go to Atlantis to confront Attuma but he sent his guards to set an attack on the surface world. Meanwhile, Jhonny had to face an attack by the giant mutant whale. The FF went invisible and slipped inside and they confronted Attuma who used the horn of Horn of Proteus to summon a group of big eel's and the FF had to fight them. Sooner, Jhonny came and scared off the eel's but he said he wanted to leave.
|Reed Richards||Hiro Kanagawa|
|Susan Storm||Lara Gilchrist|
|Jhonny Storm||Christopher Jacot|
|Ben Grimm||Brian Dobson|