Deadpool's friend, technology expert, weapons dealer, and loser.
History
Weasel attended the same college Peter Parker did. If not for a time traveling Deadpool posing as Peter Parker and taking Weasel on a drinking binge, Weasel's life as an A student wouldn't have been ruined, ending up with him as a loser specializing in technology.
He eventually became a weapons dealer and partner to Deadpool, as well as a somewhat reluctant friend.
Weasel's friendship with Deadpool took him to Madripoor where he was present during the hunt for Tolliver's will, wherein Deadpool, Copycat, Garrison Kane & Slayback were all seeking out what the late and mysterious Mr. Tolliver's weapons cache contained. This mission, like others Weasel would accompany Deadpool on, would nearly cost him his life; though Weasel isn't quite as defenseless as his meek demeanor might suggest as, at one point during this story he defends himself against the mercenary Comcast; shooting him in the head.
Later, Weasel develops a strange relationship with Deadpool's live-in buddy/hostage, "Blind Al". Blind Al is easily twice Weasel's age and is a frail old woman and yet Weasel is compelled to spend time with her while Deadpool isn't around, against Deadpool's wishes. On one such occasion Deadpool catches Weasel in his house and locks both Weasel and Blind Al in "the box"; a room bereft of light but full of pointed objects, both stationary and swinging to jab themselves upon. Somehow or other, after this, Weasel and Deadpool still manage to patch things up.
He once took control of a Hydra base, becoming their leader and inventing the "Penetrator," a device that provided much innuendo and could also teleport people anywhere. He equipped all of the Hydra agents with one, and had the devices programmed to send them away. Wolverine attacked the base, not realizing that Weasel was just executing an elaborate plan. Wolverine damaged the armor, and Weasel quickly tried to explain that it was called the penetraitor armor, and that he was trying to remove the agents from the base. The damaged penetrator then sent Weasel, Deadpool, and Bob, Agent of HYDRA, tumbling through space and time, although Weasel was separated from the other two.
Video Games
Weasel appears in Marvel: Ultimate Alliance. Here's short recap of him from the video game:
Hero's Hacker
After Weasel meets Deadpool, and Deadpool becomes a part time agent for S.H.I.E.L.D., Weasel follows Deadpool everywhere. After the larger group of heroes becomes suspicious of Nick Fury's assistant Natasha, one of the black widows, all the heroes call upon Weasel's skills to secretly get information on S.H.I.E.L.D. and Natasha. But Weasel needs the heroes to get him passwords, and other information. When S.H.I.E.L.D. is forced to move their HQ, Deadpool tells Weasel where to find the new HQ, so he can still help them. However, S.H.I.E.L.D. found out that someone was hacking into their system. They then raided Weasel's HQ, which caused him to find a new safe place to stay, which ended up being Xavier's school for mutants.
