Dr. Bartholomew Oobleck is a teacher at Beacon Academy.

Oobleck's trademark characteristics are his extreme hyperactivity and his love for coffee, tea or some other stimulant. Not only does he frequently "glide" about in class at incredible speeds, he also speaks very rapidly. This energy might be a result of him constantly drinking what appears to be coffee. His unkempt look and the mess on and around his desk suggest he has little to no regard for tidiness. During his class, Oobleck is very enthusiastic and strict about his work, being very happy when inattentive students seem ready to contribute to class and punishing students who perform poorly. This is because behind his almost flamboyant behavior, Oobleck is an incredibly deep and compassionate thinker, completely dedicated to and relishing in his roles as Huntsman and teacher. Oobleck views history as an important way to prevent the repetition of past mistakes, saying the advancement of knowledge is worthy of being referred to as fighting, for it will better prepare Humanity's future in the fight for survival against the Grimm. Oobleck takes pride in his historical knowledge. In "Mountain Glenn", Oobleck is upset and angry at himself for not remembering the information about Mountain Glenn's underground city. This same pride causes him to snap at people who call him "Professor", demanding they address him properly as "Doctor".

I am looking for an impression of the official voice https://www.youtube.com/watch?v=mAuDkN45Xv0