Disco Sue is a self-destructive personality who expresses her self-loathing through "bodily mutilation, tattooing, alcohol abuse, and coprophilia." According to Pickles, she is a nihilist and likes to collect "morbid crap" such as torture devices and American Civil War memorabilia.

Sue is an alcoholic, as she would rather cut off her penis than admit that "booze ain't food".

After a near-death experience (falling drunk from the Murdercycle) she was prompted to seek faith in several churches, including the Church of Satan. Eventually she decided that all religions were "the same boring crap" and gave up her search.

Sue plays the bass guitar for the band; however, this seems rather unnecessary, as Nathan has stated that they mix her bass out of "pretty much every song."

Sue is shown to be unpopular with women due to her status as bass player and her unattractiveness. She has been known to sexually harrass Dethklok's female employees.