Optimus Prime is the awe-inspiring leader of the Autobot forces. Selfless and endlessly courageous, he is the complete opposite of his mortal enemy Megatron.

Mirage is a rebellious Autobot, constantly disobeying Optimus Prime's orders, like revealing himself to a human when Optimus states not to. Mirage is also very immature, constantly making jokes and not thinking about the consequences when he makes decisions. However, despite his flaws, he's still a noble Autobot, sacrificing himself to protect his human friend. (From Transformers Rise of The Beasts)

The G-Man is an enigmatic and mysterious character that appears in nearly every title of the Half-Life series. Referred to as a "sinister inter-dimensional bureaucrat", he is known to display peculiar behavior and wield reality-bending powers.