Pareidolia

Pareidolia is the recognition of a specific pattern in something different. This could relate to seeing a face in inanimate objects or tiles laid randomly and then turn out to be in a pattern. Our brain identifies these pattern because of our memories of shapes, colors, etc. These are the facial expressions I saw.

Relaxed.

Sassy.

Face of realization.

Snooty.

 Confused alien.

 Annoyed.

Happy.

Shocked.

Calm.

Two emotions in one:

Bored or Surprised.