Dr. Antoinette Baines (Kim Johnston Ulrich) was the villainess from the pilot episode of Lois & Clark: The New Adventures of Superman.
Dr. Baines was a noteworthy scientist and the creative mind behind an anticipated space ship launch, which is the center of a conspiracy uncovered by Dr. Samuel Platt. Platt stated that the launch was sabotaged and the rocket is set to blow up, and later in the episode, Baines is revealed to be part of the plot, having killed Platt and making his murder look like a suicide. She is also revealed to be working with the true mastermind, Lex Luthor, and the indication is that they're also lovers.
Later in the episode, the evil Baines captured Lois Lane and Jimmy Olsen after they returned to the area to investigate further. She also had Clark Kent tied up with them, with the plan to kill all three of them in an explosion. Clark uses his powers to escape and rescue Lois and Jimmy, while Baines escaped in her helicopter. However, the chopper blows up and kills Baines, and it was revealed that Lex was behind it to tie up any loose ends.
- Kim Johnston Ulrich also appeared as the evil Janine Vogel in an episode of Diagnosis Murder.