Jenna Elfman

So far, in her Xmas roles, Jenna Elfman voiced as the mermaid clock in Mr. Winkle's shop (that was later brought by someone) in The Tangerine Bear. Recently, she portrayed her role as a mother (with her imaginary friend Mary) in the short-lived ABC hybrid series Imaginary Mary.

Trivia

 * She shared its last name with the In Search of Santa character Max Elfman.