Karl Uhl (also known as Senor Uhl) is a supporting character in the Tales of Arcadia franchise.
He is supposed to be a Spanish teacher at Arcadia Oaks High. Due to the disappearance of the last two principals, Karl was chosen to be the interim principal until a proper one was hired.
When Aja and Krel came to Earth, Uhl was the first person to show kindness ot them when he learned that there had been a coup in their “country” (home planet) and promised to protect them from other threats. He also has a strange obsession with his truck, who he calls “Susanna” and seems to have a crush on Ms. Janeth, which she is unaware of.
He also likes listening to Barry Manilow and is Austrian.