a dude
Alohamora
What do you mean? The names of the four houses in Harry Potter are Gryffindor, Ravenclaw, Hufflepuff, and Slytherin.
It blasts open doors etc.
Alohomora
Turn the knob
if doors are locked they cannot bee unlocked
In front of the doors to the staff room.
it is called a barbican.
To reach the Defense Against the Dark Arts (DADA) classroom in Lego Harry Potter, first navigate to the Hogwarts castle. Look for the entrance to the DADA classroom, which is typically located near the Great Hall. Use a character with the ability to unlock doors or a character that can perform specific spells to open the entrance. Once inside, you can attend the class and complete related tasks or challenges.
she has no particular intention yet, but she said that she wanted to "keep the doors open" in case she ever wants to write something in the harry potter world again.
Look through secret doors or find some on your own?
The spell that opens a locked door is "Alohomora!" The spell is taught during the first year of education at Hogwarts. The first book in the Harry Potter series -- Harry Potter and the Sorcerer's Stone -- chronicles Harry's first year. "Alohomora" is a charm and thus would've been taught by Filius Flitwick during Harry Potter's time at Hogwarts.