Daevas5 is supposed to be the prime minister of a Galaxy, she's of some reptilian race that can do some funky stuff. She's supposed to have some love ties with Seemer.
Tiana's of a specie that is akin to Spiders or Mantises. Where they have to eat/kill the mate to breed, producing thousands of offspring per batch. Only in her case she bears the shame of being barren. She'll still kill you for the sake of it tho... Her 4 extra limbs are used during mating, or hunting.