The wife of William B. Baxter. She suffers from what Renton first identifies as "Desperation Disease." The last time we see Martha Baxter and William B. Baxter is just before their death in episode 49: "Shout to the top!" (Song by The Style Council). William Baxter disagrees with Renton's observation and states that "Dispair" got its name from the way the friends and family members reacted to the person with the "Sickness." Her presence in this episode helps change Renton's mind about running away and instead decides that he wants to be with Eureka no matter what, "...even if the world were ending...."