My avatar and signature are both not only from the same galactic neighborhood, I found them both lying on the same beach.
Both are mirror images from artifacts.
They each have a face with squinty eyes and puffy cheeks somewhere on them.
There's a flying vehicle depicted on both.
Theres a magic mushroom on both artifacts.
Another image from my avatar reminds me of Glinda:
The signature pix reveals this with a mirror:
To me my signature looks like my upsidedown avatar, but smiling. They could be the same alien. I'm a believer, it's all very real, tangible stuff.