Transformers x Treasure Planet - fan character design

As a character design exercise, I tried to fuse together two visual universes that I love by reimagining, in the iconic style of Disney's "Treasure Planet", some Transformers characters I deemed fit for the role.
For the two Captains, Flint and Amelia, I preferred a more alien-like design, while for Silver/Megatron's mechanical arm I took inspiration from his armour in "Transformers Prime".