The brainship world is a science fiction setting, based on Earth in the year 2218. Humanity in this setting has made great technological progress, and the focus of stories in this setting is on shellpeople, who are humans transformed into living spaceships, space stations, cities, factories, or other buildings, in order to more completely and directly control various aspects of them - for example, a city shellperson might manually handle how traffic lights change in order to optimize traffic flow and reduce traffic jams. Shellpeople are rare, with less than 1,500 in existence, and are mostly found in jobs that need extreme levels of conscientiousness, technical skill, and attention to detail, or where having a shellperson on staff is a matter of prestige.

Humanity in this setting has developed faster than light space travel, and has met several species of sapient aliens, though the aliens are generally not the focus of stories in this setting - aliens in this setting are often too strange for humans to easily interact with, though some species are easier to get along with and might have enclaves on human space stations or in human cities.

Please describe three strange sapient alien species for this setting, and three species of sapient aliens that might live with humans.