Board Thread:General Discussion/@comment-6192846-20140612134000/@comment-6192846-20140808204428

Misstress of the heavenly yard wrote: Random proposal that we change Jis tamia to Ziz-tamia Check my reply up above:

Servant of Evillious wrote: As an add on, decided to look into Ziz a little more. I can confirm that "Jis" (Jizu) in Jis Tiama is the same spelling as it (ジズ jizu). I'm not sure on the "Tiama" part still (ティアマ) but it's something.

Ziz-san/Mr. or Ms. Ziz might be a nickname for the octopus' species Nemesis or someone else gave it.