Buck is a weapons developer and businessman. and serves as a main villain in this story. Buck is talkative, eccentric, sadistic, manipulative and bitter, living behind 2 masks. His public face is often displayed as kind and gentle, great with people and a beautiful passion to help humanity as best as he can. Underneath it all, he houses a very dark heart full of hatred, anguish and sadness that wants to destroy the UNSC for wrongs they have done to him in the past. He works with an ambitious scientist in order for him to gain tech to take them down from the inside while also supplying her with money and some tech he creates on the side.

He often is playful with his friends and enemies, treating life as a game and believing he can do anything with his standing. Desmond is his main henchman and the two seem to have a somewhat symbiotic relationship, despite their major personality differences and difference in their overall goals.

A great example of his personality is someone like Felix or Temple from Red vs. Blue