The Terror is a supervillain originally thought to be dead who operates in The City.
Fifteen to twenty years ago, The Terror used a weaponized and lethal version of syphilis to destroy the eyes of the Flag Five. He then had his henchmen kill most of them in front of a young Arthur Everest – who had just lost his father when the Flag Five's aircraft crashed on top of him. To top it all off, The Terror then mocked Arthur and stole his ice cream. This scene was photographed for an edition of the Times magazine, which also detailed the Flag Five's deaths. Possibly some time before this, he gave his protege Janet, the future Miss Lint, her power-controlling bracelets, and also told her to own up to the nickname people had always given her.
As recounted by a City police officer, he once sent his soldiers to slaughter the feline family of Mads "Murph" Murphy, aka Cat-Man-Dude, after his identity was exposed by the authorities following his arrest on charges of mauling people outside a YWCA in Hoboken, New Jersey.
A year later, The Terror was seemingly killed by his immortal enemy Superian, whom he had engaged in battle with since the latter's arrival on Earth. The site of their battle became a crater, and The Terror was only identified when they found his teeth embedded in the crater walls.
Despite The Terror's seeming death, many, including a now-adult Arthur, believed that he was still alive, having gone underground to control all the crime in The City, using lesser criminals such Ramses IV and the Pyramid Gang to do his bidding.
The Terror is a cold, ruthless and maniacal supervillain who shows an absolute disregard for the lives of anyone but his most loyal and skilled followers, as seen during his massacre of the Flag Five and confrontation with Arthur, and a conversation he once had with fellow supervillain Miss Lint before he presented to her the bracelets she would use to control her powers. His elderly appearance belies his true cunning genius, as evidenced in the modus operandi that he employed over the years.