A “Plaguie Rogue” in this context,is an insulting name attributed to mischievous, annoyingly playful individuals. The term “plaguie” is supposed to worsen the insult, as it suggests the individual is a carrier of the fatal bubonic plague (OED).
“Plaguey”
A. adj.
- Now arch. and rare.
a. Of the nature of or relating to bubonic plague or any other plague-like disease; pestiferous, pestilential, pernicious. (OED online)
“Rogue”:
n. A mischievous person, esp. a child; a person whose behaviour one disapproves of but who is nonetheless likeable or attractive. Freq. as a playful term of reproof or reproach or as a term of endearment. (OED online)