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Watch Fantastic Four: World's Greatest Heroes Season 1 Episode 21 Online

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“Atlantis Attacks” — Watch "Fantastic Four: World's Greatest Heroes" Season 1 Episode 21 online in HD for free. Check streaming providers, cast, and episode details.

Sep 1, 2007 Season 1 Episode 21 21 min TV-Y7

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Fantastic Four: World's Greatest Heroes Season 1

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Season 1 Episode 21 — Aired on Sep 1, 2007 • runs about 21 minutes.

Written by Christopher L. Yost, Craig Kyle.

Notable cast/guest names in this episode include Hiro Kanagawa, Lara Gilchrist, Christopher Jacot, Brian Dobson.

This page includes 1 official still(s) (when available) plus legal availability links.

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Synopsis

The Sub-Mariner returns, but this time he needs help to defeat Attuma, who has taken over Atlantis. While Reed, Susan, and Ben head off to help free Atlantis, Johnny stays behind and faces an attack on the city from a giant mutant whale