Weasel? Kind of reminds me of a turtle, for some reason. A homicidal maniacal Malthusian turtle, mind you. weasel NOUN I get that. He acts like a weasel, certainly. However, he looks like a turtle without its shell. So, Teasle or Wurtle? How about a Llama ? Lol. Definite resemblance. :mdrmdr: Insult to the noble Llama, though. Llamas provide a great service to mankind. Billy boy, not so much. 
[ˈwēzəl]
weasel (noun) · weasels (plural noun)
a small, slender, carnivorous mammal related to, but generally smaller than, the stoat.
a deceitful or treacherous person.
"he was a double-crossing weasel"
synonyms:
scoundrel · wretch · rogue · swine · bastard · creep · louse · rat · toad · [more]New content will be added above the current area of focus upon selection
snake · snake in the grass · serpent · viper · skunk · dog · cur · scumbag · heel · bad lot · nasty piece of work · rat fink · sleeveen · dingo · rotter · hound · bounder · cad · blackguard · dastard · knave · varlet
VERB
weasel (verb) · weasels (third person present) · weaselled (past tense) · weaselled (past participle) · weaselling (present participle) · weaseled (past tense) · weaseled (past participle) · weaseling (present participle)
achieve something by use of cunning or deceit.
"she suspects me of trying to weasel my way into his affections"
NORTH AMERICAN
behave or talk evasively.
"we needed him to take a firm stand, but he weaseled"