"Purebloods" really pure? Fantastic wizards and where to find them

[terryljames76]

No: HPFGUIDX 71300

This is actually a disgusting theory if you think about it logically, 
but I'm not going to go to the disgusting place.  I want to know if 
I'm totally alone in thinking that some wizards/witches may not have 
a completely human heritage.

I just got "Fantastic Beasts" (I know, I'm running very late) and I 
looked up kneazles first thing because I'd heard about them on the 
list.  Then I looked for thestrals because I'd also heard here that 
they were included.  Then I looked at the descriptions of the other 
beasts very carefully, looking for clues to future plots.

Marcus Flint is consistently described as looking like he's part 
troll.  Is that just Harry's opinion, or a reference that some 
wizards' blood is not as "pure" as they like to think?  Dudley is 
described as pig-like.  Again, just a description, or a way to get us 
thinking that some people may have partly non-human blood?  There's a 
whole subculture dedicated to (so far) non-canon PartVampire!Snape.  

I can't remember offhand whether veela are considered "beasts" or 
not, but as canon Fleur is part veela.  Hagrid is part giant--are 
they considered people or beasts?  And Lupin as werewolf is 
definitely canon.  

The demiguise was the only one I remember which was specifically 
mentioned as having properties of invisibility, which made me think 
of Dumbledore, as I've been driving myself crazy trying to figure out 
what "his own ways of being invisible without a cloak" are.  
(Throughout all the books there are sudden breezes around Harry--I 
think maybe this is Dumbledore or at least someone else invisible.)
Could he have demiguise in his ancestry?  His silver hair and beard 
also match the description.

If we accept the premise that somehow "FB" blood got into wizard 
families (don't think about how), then Luna has to be part mooncalf.  
The protuberant eyes, the name is a clue, and then I can definitely 
see Luna dancing around in the moonlight, leaving crop circles 
behind...  

And Mr. Pureblood himself, Draco Malfoy, is definitely part Jarvey.  
The ferret reference is priceless, and a dead giveaway.  Also the 
Jarvey "seems intelligent" because it can talk, but it only says 
insulting phrases.  This is classic 2D Draco--as much as we are 
hoping for something more interesting, such as Angsty!Draco or 
Redeemed!Draco, we haven't got it so far.  Even if this whole theory 
is nonsense, I can't believe somebody hasn't used it as an insult, 
Ron for instance: "Malfoy, you are *such* a Jarvey."  

That's all I can remember for the moment.  Anybody else got any other 
ones?  Comments?

Terry LJ