Most of Frieza's family are employed in high status positions under a massive Frieza Force, which they also run. With the exception to Cooler and Kuriza, their naming structure is derived from things related to low temperature. Among their race, some members of Frieza's family are abnormally strong mutants with an abnormal level of cruelty. All known members of this race in Universe 7 in the manga and anime have been from a solitary family line, Frieza's family.
Not much is known of their origins, as their home planet is never seen. Frieza and Cooler in Plan to Eradicate the Super Saiyans
