You may want to change the cluing to ask for the 3 original series characters, rather than cast members. For cast members, I count at least 4, including Majel Barret-Roddenberry.
I spelled Roddenberry and Bajorin a million times, off by one letter each time and it wouldn’t accept. Shouldn’t rodenburry, Roddenburry, bejoren, bajoren, etc be considered close enough? Also, Spok isn’t acceptable?