Dagwood and seaQuest's changing tone

Who is the unusual character in the seaQuest cast photograph?

The pictured character is identified as Dagwood, a genetically engineered person; the season remains uncertain.

Dan identifies the character in the shared cast photograph as Dagwood, a genetically engineered person. He thinks the image comes from the second or third season. His assessment is that seaQuest began with a more restrained premise before moving toward increasingly implausible stories. The comparison with The Next Generation and Deep Space Nine expresses his view of the show's changing ambitions; neither the image identification nor its season has been independently checked here.