Quiron us Quirrell is an unlockable character and primary antagonist boss character appearing in LEGO Harry Potter Years 1-4. Edit
Turban, Black Cape
He is the Defence Against The Dark Arts Professor at Hogwarts School of Witchcraft Of Wizardry in Year One: The Philosopher's Stone.
Quirrell is an in secret death eater who placed the Mountain Troll as part of the guarding obstacles in the Dungeon Chambers housing the Philosopher's Stone of which desires to posess to give Lord Voldemort a body.
Lord Voldemort appears as a face on the back of Quirrell's head which turns completely around for the Quirrell/Voldemort boss fight in Chapter Six of Philosopher's Stone: Face Of The Enemy.
He is the third and final boss of Year One.
Quirinus Quirrell first appears in Year One in the opening cutscene of Chapter Two: Out of the Dungeon in which he alerts Albus Dumbledore in the Great Hall during the Halloween Feast of the Mountain Troll escaping from the Philosopher's Stone Dungeons.
He is then seen in the concluding outro of the level alongside Minerva McGonagall and Severus Snape entering the Girl's Bathroom where they find the Mountain Troll unconsious following defeat from Harry Potter and Ron Weasley.
Snape gives a suspicious glance to Quirrell in the scene and after everyone exits Quirrell gives an angered look.
Quirrell then appears again in Chapter Three: A Jinxed Broom in the opening scene alongside Snape in the Gryffindor Quiditch Pitch Stand jinxing Harry's broom.
Hermione with Ron's binoculars catches sight of both Quirrell and Snape mumbling and assumes Snape to be the one jinxing Harry's broom for which she then sets off to stop with Ron.
Quirrell appears in the concluding outro as Hermione set's fire to Snape's cape which causes him to strike Quirrell by accident in the chest knocking him down and ending the jinx.
After Harry, Ron and Hermione enter they find a harp Quirrell has created out of the skeleton which has put Fluffy to sleep.
Quirrell then pops up at the trapdoor and destroys the harp causing to Fluffy to awaken.
He then finally appears in the Mirror Of Erised Chamber trying to get the stone for which he eagers Harry to obtain.
He then head turns into Voldemort's face and set's the room alight at the floors cracks making fire surround the platforms dividing the room.
He has a total of three hearts and the form he is in is another character variation of both him and Lord Voldemort.
After defeat the concluding Outro shows him lose his hands and end at Harry's touch which then leads Lord Voldemort's hovering spirit to frighten Harry into fainting.
His final moments oversee him in spirit form trying to seize the stone from the ground but can't because of his spirit hands.
Harry's parents in the mirror laugh at him as he stomps away.
It's unknown what happened to him, but its possible he was kicked out of Hogwarts.