Magni Catfish was an enemy from the 1978 Japanese show, Spiderman. He has become quite popular with kids at a middle school in Wisconsin, and a meme has been generated of him. One of the few pictures on the Internet of Magni Catfish had the subtitles, "What's the matter Magni Catfish," making this phrase very popular. In the episode, he was created to set off a fault line under Japan. The meme of Magni Catfish has Magni Catfish on the right and Amazoness, another enemy on the show, to the left.
Gallery
What's the Matter Magni Catfish? Meme
A Giant Magni Catfish.