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She-Hulk Trailer Dropped - The Loop
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The Undersea Manta Ray made its first and only appearance in They Lurk Below.
History
In They Lurk Below, Eddie borrowed the Undersea Manta Ray from his grandfather thinking he wouldn't mind and they got attacked by the giant squid creatures, because Donovan stole a very rare power source from them to run his underwater hotel.
Appearances
Ben 10
Season 2
- They Lurk Below (first appearance)