Alexander DuBrow

Alexander DuBrow is an antagonist in the nineteenth book in the Goosebumps series, Deep Trouble.

History
Alexander is introduced as the assistant to Dr. Deep on his ship, The Cassandra. While claiming to be a science student, he does a lot of the heavy work on the boat and also cooks the food, however quite poorly. Alexander and Dr. D get a request from a pair of zoo owners to find a real life mermaid, with an offer of a one million dollar reward on the line. Dr. D. agrees, but has reservations on putting the mermaid in captivity. Later on, Billy Deep finds a young mermaid, and the group manage to capture her, placing her in a giant fish tank.

A few nights later, Billy and his sister Sheena awaken to see Dr. D unconscious and surrounded by masked men. They hope that Alexander can help, but it's soon revealed that Alexander was working for them all along. It turns out that he was seeking the mermaid to give to his bosses for a twenty million dollar reward. Alexander and the goons place the Deeps in the giant tank and throw it off the boat. But the Deeps are rescued by the other mermaids. They catch up to the kidnappers and try to save the mermaid, only for their dinghy to be set on fire and the kidnappers. They manage to put the fire out as the kidnappers plan to throw them back into the water. Suddenly, the boat begins to rock as the mermaids are violently shaking it, eventually freeing the young mermaid. The Deeps escape. However the status of Alexander and the other kidnappers remains uncertain.

Personality
Before his turn on the Deep family, Alexander comes off as friendly and unassuming, particularly toward Billy and Sheena. And despite turning on the Deeps, he claims that he had to turn on them or the kidnappers would have killed him, though that is likely a facecious claim.

Physical Appearance
Alexander is described as being in his early twenties. His height is 6'4. He's very muscular and tanned with wavy blonde hair, blue eyes and powerful hands.