The Osaarians were originally to have been Orionpirates, as part of an ongoing attempt by the writers of Star Trek: Enterprise to imbue that series with references to Star Trek: The Original Series. However, the name of the enemy species was later altered during rewrites of the script.  In the first draft script, they were referred to as Ktarians. Also, when they were introduced in the episode's script, they were referred to as "savage-looking ALIEN MARAUDERS", keeping the name of the species unknown to the reader until later in the script. This was true of how the species was depicted in the first draft and in the final draft, the latter of which finally regarded them as Osaarians.