|Planet of origin||Wormulon|
|First appearance||"Fry and the Slurm Factory" (1ACV13)|
|Voiced by||David Herman|
Slurms MacKenzie also known as "The Original Party Worm" is the spokesman for Slurm. He was included in the hidden prize found in a certain Slurm Can. He is required to party 24 hours a day. When Fry, Leela and Bender found out about the secret (and only) ingredient of Slurm, Slurms decided to help them escape as he was so tired of parties. He ended up sacrificing himself to save the others' lives from the Slurm Queen. He was killed when the "real" Slurm factory's caves collapsed due to his partying. Before he died, he let his party girls go. He was honoured by the Planet Express crew with one final party.
- Slurms MacKenzie is likely inspired by Spuds MacKenzie, the dog mascot of Bud Light beer.
- He is similar to Duffman from The Simpsons, another Matt Groening cartoon.
Slurms MacKenzie: Whimmy-wham-wham-wazzle!
- "Fry and the Slurm Factory" (1ACV13)
- "Spanish Fry" (4ACV17)
- "In-A-Gadda-Da-Leela" (6ACV02) cameo, unknown moment)
- "Yo Leela Leela" (6ACV21) unknown moment)
- "Reincarnation" (6ACV26) unknown moment) Disputed canon
- "Free Will Hunting" (7ACV09)
- "T.: The Terrestrial" (7ACV16)
- "Fry Me to the Moon" (US#015)