Hahaha! Such good fun! I had a good laugh! Thank you very much!

The fourth one is kind of a trick! I think behind this one is the one that fits in with others! But the fifth photo is the real trap! You cunning wise Greek!
You had hidden something else behind this one! The surface photo is the 'sheep in wolf clothing'. So, beware! The fifth photo is truly the odd one out, when looking beneath its surface and by turning it inside out!

Nice one! @onceuponatime!
My salute to you!