He is a streetwise fish inside a golden robot suit, Pondscüm is obsessed with "bling-bling", and will get it at all costs. However, he truly carries a Swedish accent which he reverts to whenever people can't understand him. He is usually accompanied by his female henchmen, the "Blixens". He reappears in "League of Evil" as a member of the league. Also, he makes good steaks, as found in the Evil Villains Picnic in "Deja Foo". In "Fighting Fooberty", he was revealed to actually be a golden pollywog. Later in the same episode, he underwent a botched nose job.
At the end of the episode, Pondscüm returned to his robot suit (after having being kicked out of it by Yin and Yang) in a terrarium, since he had acquired the abilities of breathing out of water, a powerful frog jump, and a very powerful tongue when he turned into a frog, though in later episodes he is returned to being a goldfish.