Glitch slimes were formed from a bug in the codebase of Viktor's Slimeulation of the Far, Far Range. Though a wholly digital entity, these slimes could easily be considered 'real' within the limits of the world they inhabit. Glitch slimes do not seek out food like physical slimes; instead, they seem to be expanding to every corner of the Slimeulation, driven by some unknown purpose.
Though glitch slimes pose no direct danger to a rancher, their mischievous nature can make for hazardous situations when attempting to wrangle them. Glitch slimes will take the form of other slimes, distinguisable only by the inaccurate face they present. Vac-ing them up or using debug spray will reveal their true form. Additionally, a glitch slime can take the form of objects commonly found in the Far, Far Range. If you're familiar with the real range, look for objects like rocks and trees that don't seem to belong. A splash of debug spray can reveal many glitch slimes in disguise.
A glitch slime does not display any drive to eat the simulated food of the slimeulation and so no[sic] known plorts exist. However, if glitch slime plorts did exist, they would be virtual like everything in the slimeulation and have no actual value. Unless of course, a bunch of people decided virtual plorts have value, and then maybe everyone would start buying them. Heck, maybe eventually glitch slime plorts would worth a fortune because a bunch of us just agree on that too and then we all created our own Slimeulations to generate glitch slime plorts. But if that happened, then we would all be using an absurd amount of real energy, harming our real enviroment further, all to generate virtual plorts? So obviously, that's just a very silly thing and we'd never do that.