In regards to the character's concept, Mark Gruenwald once commented that he initially thought a 1,200 pound man was implausible, but later discovered the existence of such individuals through reading People magazine.

A mysterious organization created a meeting in Las Vegas to divide up the territory and related situations of the deposed criminal mastermind the Kingpin.

The situation falls apart due to various factors, including infighting among the group leaders and the slightly successful infiltration of Microchip and Mickey Fondozzi.

[5] After receiving a warning from Nomad's enemy, known as the "Favor Broker," Lugman attempts to flee the situation in a vehicle that is specially designed to accommodate his weight.

Now penniless after the Hood's fall from power, Slug sold the footage to a celebrity video website for money needed to leave the country.

In the midst of the "Last Days" part of the Secret Wars storyline, Mary Morgan hires Scott Lang to steal back an Asgardian artifact that she had lost to Slug over a game of contract bridge.

[12] As part of the All-New, All-Different Marvel, Slug used Power Broker II's Hench App to hire the second Hijacker to steal a Giganto egg from a S.H.I.E.L.D.

According to The Official Handbook of the Marvel Universe: Update '89, it is possible that the Slug is a mutant, given how difficult it is for a normal person to achieve such tremendous mass and remain alive.

Unlike the Blob, the Slug lacks the ability to compensate for his mass, rendering him practically immobile unless he is utilizing a high-tech personal hovercraft.

The Slug's high percentage of body fat allows him to float effortlessly in water, and his metabolism grants him limited immunity to drugs and poisons.

In order to move around, the Slug makes use of special custom-designed heavy-duty electric wheelchair/forklifts that are outfitted with tank treads or heavy tires.