Extreme Usability specializes in user research and design for underrepresented markets such as zombies, vampires, werewolves, aliens, and elven court members. They address the unique challenges of conducting usability evaluations and design for these populations. It is important to target the right users and context to avoid false positives or negatives. All users are not equal - for example, zombies have reduced cognitive abilities while vampires cannot operate during daylight hours. Moderated testing helps ensure the right user and context are selected. Remote and creative recruitment techniques can also be used.