Luq is a Kalar labourer on Rigel VII who has lived for years without his memories, and who helps Captain Pike's landing party in the episode Among the Lotus Eaters.
Luq appears in the second season of Star Trek: Strange New Worlds. Radiation on Rigel VII wipes the memory of anyone not shielded from it. The rulers live in a protected palace, while the field workers outside wake each day knowing nothing of their past.
When Pike, La'an and M'Benga lose their memories too, Luq takes them in and explains the workers' lot. He holds that forgetting is a mercy, since no one can grieve for what they cannot recall.
Pike brings him into the palace, where his memories come back, among them the loss of his family. Luq decides that the pain is worth having, because the memory of those he loved comes with it. The Enterprise then removes the source of the radiation. He is played by Reed Birney.