Have anybody gotten shiny Guzzlords?

I raided Guzzlord 25 times today and not a single shiny. I got three with a background (might have been more as four escaped). All three were two stars though.

Has anybody gotten shinies or UB with a background that is either perfect or 3*? Thinking about should I go out of my way to participate in tomorrows raid hour for Nihilego.