Created by writer Fabian Nicieza and artist Klaus Janson, Weasel first appeared in Cable #3 (July 1993).

Weasel was once a bright young lad attending Empire State University, where he was a classmate of Peter Parker and Gwen Stacy.

Disguised as Peter Parker, Deadpool related to Norman Osborn false information about Jack Hammer being a drug user.

With the gadget fixed, Deadpool returns to the future, leaving a depressed and drunken young Hammer with a new career option: crime.

[2] Weasel quickly proved himself as an able informant and arms supplier to Deadpool and eventually came to form an uneasy friendship with him.

However, when his friend baffled and conclusively defeated Taskmaster, he chose to return to his employ, encouraged in part by Deadpool's show of compassion for him and the promise of a new cable connection to the Playboy Channel.

[7] In an effort to get in touch with his friend before the appointed showdown time, Weasel teleported to Deadpool's San Francisco home - a definite no-no.

Weasel decided to atone for this crime by faithfully serving his time, and when he got out, coincidentally worked a job with Deadpool in Rumekistan.

Furthermore, Weasel's seeming joining of Hydra was a ruse; his teleportation gift simply sent the users straight to an American controlled prison.

[8] Although he is not explicitly stated to be a pet owner, Weasel takes Blind Al's dog at her request when he leaves Deadpool, and later on is shown to have a white cat in his apartment.

Using his vast knowledge of Deadpool, he quickly traps and defeats him, ultimately locking Wade in his own version of the Box.

Weasel agrees to the plan, and the two once again face off with Grizzly, now back again and attempting to steal the millions of dollars in the casino's counting room.

In the ensuing battle, Weasel fights Grizzly in the Wildcard suit while Deadpool sips drinks as The House.

Unfortunately, everyone thinks Weasel is the one in The House suit drinking Lime Rickey's, and worst of all, Deadpool runs off with Grizzly and the cash.

Weasel is later freed from the Box by Macho Gomez, who recruits him to his team of people who were screwed over by, and want revenge on, Deadpool, and they confront him in Bob, Agent of HYDRA's garage.

[11] After the Manstrosities are defeated in a confrontation with Spider-Man and Deadpool, Patient Zero injects the two heroes' DNA samples into another test subject.

[12][13] When his creation turns on him, a desperate Patient Zero reaches out to Spider-Man and Deadpool for aid, and is killed in front of them by Itsy Bitsy.

[15] Jack Hammer has no superpowers but he is an expert hacker and inventor with a genius-level intellect and knowledge of many weapons.