Related Clues:

• Muppet Rizzo, e.g.
• Plague carrier
• Dirty dog
• Nocturnal rodent
• Untrustworthy one
• Jackson Hole's river
• Lab maze runner
• Untrustworthy sort
• It may be down in the dumps
• It has sliding scales
• Snitch (on)
• Weave in and out
• Plumber's aid
• Renegade
• Nogood-nik