The Battle of Hogwarts. Who are the Good Guys?

[Constance Vigilance]

No: HPFGUIDX 137286

At the Battle of Hogwarts, there are two suspiciously unnamed DE's. 
JKR loves names and gives names to even the most insignificant 
characters, so two who are only described but never named are 
unusual. As I began to look at the activities of these guys, I got 
even more suspicious of them. Let's look at the sequence of events:

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DE's arrive. Lots of fighting. Gibbon goes to the top of the tower 
and sets off the Dark Mark. He comes back down and is killed by the 
Killing Curse from Blondie which Lupin believes was aimed at him.

Malfoy goes into the tower stairs followed by the brother and sister 
(Amycus and Alecto) and Greyback and a brutal faced man. They lock 
the stairs behind them. Neville tries going through the lock and 
gets tossed in the air. Blondie is sending curses everywhere which 
do a lot of property damage but miss all the people. Snape goes 
through the locked door. Lupin tries to go through the lock and is 
tossed in the air.

Blondie sends a hex that collapses the ceiling and breaks the curse 
lock blocking the stairs to the tower roof. The Order head for the 
tower stairs.

Draco is not killing Dumbledore. The four death eaters reach the 
top.  Greyback starts to finish Dumbledore off but the Brutal Face 
stops him. Snape arrives. Snape AK's Dumbledore.

Malfoy, Snape, Greyback, Amycus and Alecto leave the tower. Harry is 
unfrozen. Brutal Face is leaving the tower. Harry freezes him. We 
never hear from him again.

Snape and Malfoy come out from the tower. Snape yells "It's over, 
time to go" There is a big fight going on. Snape and Malfoy get 
through it unscathed. Greyback attacks Harry. Somebody freezes 
Greyback. Someone sends a green jet towards him, but Harry dodges 
and takes off after Snape, running safely through the melee.

Amycus is fighting Ginny. Harry Impedimentas him. Ron, McGonagall 
and Lupin are battling Death Eaters. Tonks is fighting Blondie. 
Amycus and Alecto flee.

Harry hits Blondie with a hex. Blondie howls with pain. Blondie 
flees after Amycus and Alecto. The Room Of Requirment is apparently 
blocked. Harry takes a short cut through the Great Hall.

Harry chases them out the front doors which have been blasted. The 
Gryffindor hourglass is smashed. He has overtaken Amycus and Alecto 
but Blondie, Snape and Malfoy are still ahead.

Alecto hits Harry with a curse. Harry falls. Harry gets back up and 
trips Amycus and Alecto.

Hagrid suddenly appears. Blondie hits him with lots of curses which 
do no harm. Harry runs past Blondie and Hagrid towards Snape.

Harry attempts a Crucio against Snape but Snape parries. Blondie 
ignites Hagrid's house, possibly stopping Harry from attemptingany 
more unforgivable curses.

Harry attempts many jinxes against Snape who parries them all. Snape 
advises Harry: Keep your mouth shut and your mind closed.

Someone (either Blondie or Amycus or Alecto) crucios Harry. Snape 
cancels it and berates the DEs. 

Malfoy, Snape, Blondie, Amycus and Alecto escape. We do not know 
what happens to the other DE's in the battle.

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Summary of activity by ambiguous DE's: 

Snape: Stuns Flitwick, AKs Dumbledore (results under debate), 
saves Malfoy, gives Harry good advice, (maybe) smashes Gryffindor's 
hourglass, cancels a Crucio on Harry, stops DE from doing any more 
damage to Harry.

Blondie: Kills a Death Eater, trashes Hogwarts, unlocks the door to 
the tower, stops Harry from using an unforgiveable by burning 
Hagrid's house.

Brutal Face: Stops Greyback from killing Dumbledore. Is frozen by 
Harry.

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My conclusion: 

All three are Good Guys undercover. Each of them do something to the 
advantage of the Order or Harry. None of them do anything harmful to 
the Order. Well, Snape's AK is still under discussion, but I'm 
solidly on the side of it was a fake AK and Dumbledore is alive. 
Something about dragon's blood being used to fake a death earlier in 
the book. A trickle of blood from Dumbledore's mouth. 12 uses of 
dragon's blood. Hmmm. But I digress.

We know from an earlier book that Dumbledore has spies (note the 
plural) in the DE's. I think we are witnessing three of them in 
action.


Wild-eyed theorizing:

Blondie (and maybe Brutal Face) are metamorphmagi of people we 
already know. I'm guessing that Blondie is Shacklebolt. A Black man 
might enjoy the irony of becoming Very White as a disguise and he is 
a big man, so becoming even bigger wouldn't be too tough, if that is 
even a problem. Brutal Face? Who knows.


Other questions:

What happened to the two frozen DEs - Greyback and Brutal Face? 
Pippin's theory - Greyback was rescued by ESE!Lupin. Brutal Face, 
too?

How did Harry get ahead of Amycus And Alecto?
They took the long way?

If the DE's didn't take Harry's short cut through the Great Hall, 
why did they blast the doors? 
My theory - Snape just wanted to blast the Gryffindor hourglass. His 
version of "Neener, neener."

~ Constance Vigilance