I would love to see a Hydrus Fester come available sometime soon. I've decided that I'd like to reserve my last pet slot for one in which I can symbolically honor my father, a patriotic navy man who was a turret gunner in WWII. Get it... hydrus (navy) fester (flyer). That would be so awesome! Is there any possibility that we will see one in the near future?

Every Pet will eventually be available in every color but asking for them doesn't make it come faster. The Art Department knows very well which Pets are still missing and no species will be left out for all eternity. Often specific Pet colors are drawn for certain events or at certain times of the year, like Nightmare / Bloodred / Graveyard around Halloween or Reborn around Fireside so it's rather unlikely that there'll be more of those let's say in spring. Numerous Hydrus Pets were revamped and released last year in summer while we had the Pirate / Islander war to give you a possible time frame.

I'm going to go ahead and lock this, all pets will eventually be available in all colors.