Sentinel Prime, at first, seemed to be a heroic figure and a symbol of freedom to Optimus Prime, but later on, he develops into a malevolent and corrupt lunatic who wishes to dictate everyone else, either Cybertronian or human.
I only have the blend file but feel free to message or comment to get any other file for free.
BLEND (Blender, filesize: 15.1 MB), BLEND (Blender, filesize: 15.1 MB)