Have I missed something? Why is the danavas hacker available for purchase only with the karkata tag pilot?
The same way the Morat's Raicho Pilot is sold with the Sphinx's Remote Pilot, or the Remote Pilot for Overdrones, Xeodrones and Avatar is sold with the new Avatar in exclusive... If you want extra Danavas, I suggest picking the Kanren Hacker (female model, btw) as Danavas #2. I doubt you will need a third one for OSS even if the Sectorial allows it (unless she gets a KHD profile, that is...)
Fundamentally, it was so that it was available to aleph players without the need to (re-)buy an existing pack (eg, if re-packed with the marut) or adding another SKU. Did you want the danavas without the bot? or the bot without the danavas? or just curiosity? - @ShaeKonnit might be able to help you... Also - this is the spanish forums xD