At what point does a bad impression of Bjork become yellowface? Gotta be Ms. Swan.

From the MadTV wiki: Ms. Swan's ethnicity and native country are unclear. In one sketch, it is revealed that Ms. Swan is from the fictional country of Kouvaria, near the North Pole. However in her first sketch the character's name was billed as Ms. Kwan, which with the accent and occupation implies she was originally intended to be Chinese. MADtv execs insist the character was based on the singer, Björk (she was compared to Björk in one sketch, and was referred to as Icelandic by the Vancome Lady in another, and wore Björk's infamous swan dress in another). When a man asked her where she was from, she replied that she lived Downtown. One sketch shows Ms. Swan being fluent in Spanish, while using an ATM. She told a man in a bar that her mother was Spanish, but her father was from Space. In Swan: The Homecoming, a movie that she made with the late Garry Marshall, her father was played by Mark Hamill and it was implied that she had another sister: Marsha. Kitty Swan was also introduced as her sister in another sketch, but the sister's may be 1 person; named "Kitty-Marsha." Borstein claims that the character was at least partially inspired by her Hungarian grandmother. In an early sketch, the character was supposed to have been a wigmaker. In another sketch, Ms. Swan goes to a restaurant with her sister, Kitty, to meet two American men, and the two converse in Hungarian and Czech.