Drift: 

https://www.deviantart.com/steelsuit/art/MTMTE-Drift-526876927

Deadlock: 

https://i.pinimg.com/originals/ca/fa/3d/cafa3d4fd0bfec681466bb8c6d4d7d1a.jpg

Megatron: 

https://i.pinimg.com/originals/86/af/d4/86afd4301b9d97fa102327fdd563e1ba.jpg

Soundwave: 

https://lisoundy.tumblr.com/post/105990982745/by-parcivale

Optimus: 

https://i.pinimg.com/originals/a0/54/ea/a054ea4b60f35500354a99724b83dab8.jpg

Ratchet:

 https://www.pinterest.fr/pin/25332816642924717/

https://www.pinterest.fr/pin/629167010424082332/