Ducky

The Splicer model "Ducky" first appears in Neptune's Bounty. He is dressed in full fisherman's waterproofs and, based on his rantings, appears to have a large degree of paranoia (which is not to suggest that the other Splicers are mentally sane). His dialog suggests that he is a security officer, answering to a "Mr. Coswell". Sullivan, if deceased, is a a Ducky model.