"Umbridge just lurked in the corner making notes on a clipboard. You know what Flitwick's like, he treated her like a guest, didn't seem to bother him at all."
--Fred to Harry and Hermione (OP15)
“No! You’ll do no more murder at Hogwarts!”
--Filius Flitwick to Snape (DH30)
Charms professor at Hogwarts
Head of Ravenclaw House
Ancestry: Human with a "dash" of Goblin blood
Hair: white ("a shock of white hair") (PA5).
Distinguishing features: very short ("tiny little Professor Flitwick").
Voice: somewhat squeaky.
Age: "older," since he was a Dueling Champion (CS11) when he was "younger," was teaching at Hogwarts during the 1970s. He is descibed as "ancient" (PA).
Birthdate: October 17 (JKR), Year unknown.
House: Ravenclaw (BN, JKR).
Office: seventh floor, the "thirteenth window from the right of the West Tower" (PA21).
Interests: decorates with live fairies quite a bit.
Drink: cherry syrup and soda with ice and an umbrella.
First name: Filius (JKR) is Latin for "son."
Last name : "Flitwick" sounds a lot like his wand-waving advice "Swish and Flick."
Filius Flitwick is the Charms professor at Hogwarts, and the Head of Ravenclaw House. He is very small in stature (he needs to stand on a pile of books to see over his desk), but not small in magical ability. He was an accomplished wizard and, according to rumor, was a dueling champion when he was younger (CS11). Flitwick is an emotional fellow. When Ginny Weasley is taken into the Chamber of Secrets, he bursts into tears. He seems to have a gentle spirit. His office was on seventh floor, near the base of the West Tower (PA).
When Severus Snape became Hogwarts Headmaster, Flitwick stayed to teach. Later, however, when it seemed that Harry needed protection, he joined McGonagall in an attack on Snape (“You’ll do no more murder at Hogwarts!” -DH30) that forced him to abandon his position at Hogwarts.
When the news came that Voldemort and his army would attack Hogwarts in early May, Flitwick constructed intricate magical defenses, and then took groups of fighters up to the three highest towers to work spells from above. When the battle was at its fiercest, Flitwick fought Yaxley and may have killed Dolohov.
The character of Flitwick is played by Warwick Davis, though he received a makeover in the fourth movie.
JKR: "I must admit, I was taken aback when I saw the film Flitwick, who looks very much like a goblin/elf (I’ve never actually asked the filmmakers precisely what he is), because the Flitwick in my imagination simply looks like a very small old man." (JKR)