Gordon transmogrification arc

The Gordon transmogrification arc is a story arc that focuses on Gordon Noble drinking something that turns him purple and muscular when annoyed.

Recap
It begins with Gordon eyeing a bottle with a lightning bolt on it, while, in the background, Bob points out to Thaddeus Euphemism that many superheroes are created by lab accidents. Gordon drinks from the bottle, while Thaddeus points out that due to how accident prone he and his coworkers are, it's a wonder they're not all superheroes. Gordon gets a headache and glows purple, then his shirt rips off and he becomes very tall, buff, and purple, while Thaddeus notes that it would be cool if everyone at Clones 'R' Us was a superhero.

In the next strip, Gordon asks Thaddeus what he just drank, explaining that he thought it was Gatorade. Thaddeus nervously denies that it was a gene-altering material, and Gordon is unamused.

Then, Thaddeus admits that it is a gene-altering material and starts to speculate on what made Gordon transform and if it is an emotional response. Gordon then transforms again because Thaddeus isn't listening to him, revealing that it's activated by annoyance.

In the following strip, Thaddeus does an experiment to see how annoyed Gordon has to be to change. It turns out that all it takes is a minor annoyance, like a pin prick. Thaddeus pricks Gordon with a pin and Gordon changes and throws him against the wall, breaking it.

In the next strip, Thaddeus resolves to find an antidote and is confident in his scientific abilities. Gordon then has "mixed feelings", so his right side transforms while his left side stays the same.

The arc concludes with Thaddeus going off to synthesise an antidote. Gordon drinks out of a can, which unfortunately turns his head green and makes tentacles come out of it. The same thing happens to Thaddeus when he drinks out of another can.

Trivia

 * The arc ended unresolved, though both Thaddeus and Gordon returned to normal.