Johnny

"Splicers sealed Johnny in before he could—Goddamn splicers!"

- Atlas

Johnny is a supposed assistant and friend to Atlas who reports the crashing of Jack's plane to him. Atlas sends him to investigate who is there but warns Johnny that the hacked security systems can't help him for much longer. Johnny is trapped with the female Spider Splicer Rose blocking him outside the bathysphere. He attempts to "bargain" with the splicer (saying that he meant her no harm or to trespass and that she could keep his gun). But the Splicer simply lunges at him and disembowels him, causing him to fall into the water next to the bathysphere.

Johnny appears to be a recycled Toasty skin. More than likely, this is simply a placeholder model, as the player never gets a clear view of Johnny without the use of console commands.