Vellian Crowler

When first introduced, Vellian Crowler is a tough teacher who believes the Obelisk Blue dorm is the best and hates weak Slifer Red students. He tries to get Jaden kicked out, but fails every single time. Eventually, he respects him and when he has a rematch with Jaden where he admits he doesn't want to see his students go.

His ego is so proportionate that he considers being called 'sir' an insult, so much so that a year before Jaden entered the academy, he cut 3 candidates just for calling him that, later leading to him being reprimanded by Chancellor Sherman because of it.

He has an Ailurophobia when he is afraid of cats.

Crowler is a flamboyant individual, very dramatic and such.

He has the tendency to talk to himself aloud— while walking.

Crowler's clothing and hair have led many to call him "Miss" in the dub (though Jaden first thought Crowler was some kind of "academy mascot" when they first met, annoying Crowler as Jaden laughed). Whenever someone tries to figure out Crowler's gender, he gets angry and prefers to be called "Doctor," claiming to have a "Ph.D in dueling". He dislikes Lyman Banner's cat, Pharaoh, as he hates cats. He is much more respected by his students (including Jaden) in the Japanese version.

He calls Slifer students, Jaden in particular, "Slifer Slackers". Despite this he is capable of being a fair person which is shown when he passes Chumley for excellent dueling even though he lost.

Crowler has a vague British accent, though he still has an appreciation for Italian culture.

His usual outfit consists of the more regal variation on the standard Obelisk Blue uniform, with gold trimmings and ruffled pink collar, shoulders, upper chest, and sleeves. His blonde hair is sectioned in two layers, with the layer furthest from his face tightly bound in a ponytail, and he also wears crescent-shaped earrings. He carries an Academy-issued Duel Disk known as a "Duel vest," worn horizontally across his torso, which has a motion sensor that automatically ejects cards from his Deck when he is ready to draw.