Whenever I see tribal masks, I associate them with Chipotle. And then I picture big fat burritos packed with goodness wrapped in foil. 
The green one is my favorite, as it has my favorite color. This mask looks like a giant bat with a man's face coming out the mouth of the bat. Almost like a... Batman.
The red mask was a bit hard for me to translate as to what it might represent. I wanted to see it as a catfish head. However, there is this T-shaped thing on its face that looks like it belongs on a gundam or a garidos. So, a Catfish Gundam.
Now the blue mask looks like a lion/boar. A Loar. xD
Hahaha thanks, I love that you find things that I didn't see before. Also, burritos..
The red one began as an owl, Now I see a man with a mustache, an elephant trump, some deer ears..
On the green one I see a man's head with earrings inside a frowning lemur, and also an eagle flying upwards, maybe a spaceship.
The third one I see a monkey with bear ears, also a bull with long tusks in the middle, and a little smiling dude that is also a nose.
I love this xD