Bartholomew Oobleck

"Doctor 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, but 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." From https://rwby.fandom.com/wiki/Bartholomew_Oobleck