Considering what it would do later, his suspicions are completely justified.
Properly Paranoid: It's obvious from the start that he thinks the Marker shard is bad news, wants as little to do with it as possible, and is clearly tolerating its presence onboard his vessel only because of the payout its delivery would bring.However, he could also be considered a Good Counterpart because Campbell clearly wants nothing to do with the shard, knowing that it’s affecting his psyche and was more concerned about his crew, while Mathius goes further insane, determined to get the shard back home, not caring what happens to the people onboard. Expy: To Benjamin Mathius of the USG Ishimura, where aside from the scar on Campbell’s left side of his face, they shared a similar appearance and status as captain.Drowning My Sorrows: After the Aegis VII incident involving many deaths of his crew mates and Kuttner’s insanity, he was seen in Stross’ flashback drinking a bottle or two.